We called it the air bed amid breakfast. His empire is now worth more than most hotel chains. He took having very ordinary and saw a different way to do it. Over 50 Million People using it. Youre living large. Harry smith hits the road. I want to take you for a ride to a future when you stop driving and let the car drive itself. Are you ready for a robotic revolution and maybe an accident free future. Car insurance . A third of a what it is. Lawyers who chase Car Accidents . Screw them. Look whos already behind it. Plus, the ultimate guide for grads. Be kind to others. From the kids table. Also we brought out smiles everywhere we went. An intimate look at muhammad ali, personal images rarely seen. It totally shows a different side of ali. Those stories anmore on assignment. Good evening and welcome to on assignment. Im lester holt. More americans are arrested for drug violations each year than any other crime 1. 5 Million People. Tonight a man who thinks all those arrests may be adding to the problem. Youll be surprised at what he does for a living. You dont think the war on drugs is working . Its done. Its over. Its lost. Weve done it for 60 years, billions of dollars. The result, heroin is cheaper, more available, more people are addicted and more people are dying. Those words come not from a defense attorney or social worker, but from a career cop. Leonard is chief of police in massachusetts, a working class port town outside boston. What made him reexamine his departments approach to drugs was a wave of heroin overdoses. I had just been called at home about the fourth overdose in the city in the first couple months of 2015. I felt like we were failing. In the past when your officers would come across someone who had a small amount of drugs for their personal use, theyd get arrested . Its illegal to possess heroin. Our historic response was arrest. But now the chief started wondering and he decided to change the conversation. Maybe he thought the answer didnt involve arresting everyone. Maybe the answer was changing the Way Police Deal with people who are addicted to heroin. You start looking around and realize that the other guy whos supposed to be making up policy for that. So i sat down and started typing on facebook. What the chief posted was controversial if not out right shocking. Any addict who walks into the Police Station with the rema remainder of their drug equipment or drugs and asks for help will not be charged. You take the drugs and needles and dispose of that. Yes. And you dont arrest them . No. Even though they have drugs on them which is illegal . Correct. Desperate times call for desperate measures. The chief was not expecting to start any kind of national debait. Keep in mind possession of heroin is a crime. But instead of incarceration, the chief promised addicts a dose of compassion. Immediate and guaranteed admission to a detox facility. The policeman would say we dont want to arrest you for the crimes you commit. Were saying if you continue to arrest and hold accountable to addiction but dont treat addiction, we dont get anywhere. He consulted doctors and insurance providers. He called the program the angel initiati initiative. He banned his officers from using the term junkie and told them they would now be helping addicts get into treatment. He was definitely thinking outside the box. We knew wed be busy. His Job Description suddenly included an elaborate intake process, requiring him to be as much social worker as police officer. Its still a form of Community Police work. So technically it is my job. One of the first heroin addicts to show was 24yearold nathan. If i didnt get help that night, i was going to take my own life. He walked into the Police Headquarters in july 2015. Any time ive gone into a Police Station its been through the back door in handcuffs. It just wasnt like that. They treated me with respect. What they did was find him space in a nearby detox center. Theyve done the same for more than 400 other addicts in the past year. No way to tell how many of those people are going to stay off heroin permanently . Thats not our responsibility. Thats a measure in which treatment providers, Insurance Companies and the medical community have to step up and start doing their part. Hi. Do you have anything available . Across the country, addict who is want to get clean often wait days or weeks for room in a treatment center. By the time something opens up, many have started using again. It just made you want to give up all over again sometimes. This woman is cassandra. At 29 she says shes using heroin every day. Some comes to us, they sit down, we make the calls until we find a place. On facebook, it sounds like a great idea. In real life, not everyones liking it. I have no doubt that the chiefs intentions are good. Hes just going about it the wrong way. William fitzpatrick is president of the National District attorneys association. Its the prosecutors job to see whos eligible, who really needs treatment and whether or not they shouldnt be prosecuted. Its not a cops job to determine whether or not someone gets immunity. When was the last time you used any opioid . Today. Police, he says, should uphold the law and stop there. The chief of police is not the head of social services. If someone walks in and says geez ive got a problem with my temper, i cant stop beating my wife. Is the chief going to get that person some type of counselling . Are you going to stop arresting drunk drivers . If a drunk driver presents themselves at the Police Station and asks for help with their drunk driving, absolutely well help them. If we catch them on the road, absolutely not. Its the same with this program. For some, that offer of help isnt enough. When we met cassandra she was turning over her needles and heading for detox. I dont want to die and be like the last thing that i remember is she was nothing but a junkie. I dont want to be that person. I just want to be sober. She did say that, but one day later she was gone. We found her in a parking lot about 45 minutes away and she was using again. Right now im currently high and i havent like had to work the street yet. But im going to have to tonight to have a place to stay. I dont know what else to do. Im just lost. Cassandra, i spoke to you earlier. Now the sergeant is suddenly forced into a new role from cop to sponsor. All day long just trying to reach out to her and make sure shes okay. Right now shes at serious risk of overdosing. A few days later cassandra was arrested for shoplifting and spent a month in jail. Mccastro was there in court when a judge agreed to release her if she went straight into longterm treatment. What are you going to do . Im going to the Police Department as soon as i get there theyll put me right into a program. Once again, the program met its limits with cassandra. I started making phone calls to find her a longterm program for her to go to. And she started becoming a little bit impatient. Right now im doing a lot of things behind the scenes. I know. To protect you and keep you clean. I know. Dont waste my time. Im not wasting your time. Unfortunately, she ended up leaving while i was making phone calls to try to get her help. I just felt like in court she kind of played us a little bit to get out. I dont think its a failure of the program. I think its her not wanting the help yet. Shes not ready. We caught up with her again that same day at a train station. The addiction is so strong that it just keeps taking over. It always wins. A day later police found her in a restaurant bathroom. She had overdosed. They managed to revive her and later arrested her. This time the judge ordered her held in jail until she entered a court setreatment program. You need that hammer of possible incarceration hanging over the individual to make them successfully complete their treatment program. 400 people have walked through the doors of the Police Department with no coercion and chose to enter treatment. If you lock people up, yo are at least keeping them out of my house. For a short amount of time they may be out of your hair. However, if we treat them for the longterm, then they may become your neighbor or your best friend. So stories like cassandras dont make you think twice about this . No. Even though it didnt work . If youre going to accept it as a disease, youre going to accept the relapse is part of it. Its not a perfect program. Its treating the underlying cause of the crime. Thank you to my fellow chiefs. 100 Police Departments in 23 states have now adopted elements of the Angel Initiative. About half of them have the no arrest provision. In march, the chief lobbied the Massachusetts Legislature to make his idea part of state law. This bill helps us to use it without fear that we are doing something illegally. Since the program started, addiction related crimes have decreased by a third. Its too earlyde many of the people who turned to the Angel Initiative are going to beat their heroin addictions. But nathan may be one of them. After detox, police help. Ed him relocate to florida, he says hes been clean for ten months. I mean, this is paradise to me. Just living a normal life. I never imagined that. Look at you. Honest to god, you look great. On a recent visit, nathan stopped by Police Headquarters. We were really pulling for you. You were in a really bad place. I owe you my life. I do. Like i cant say it enough. My son will have a father, my mom will have a son, my sisters will have a brother. Nathans salvation and his and humbled me. When you look at nathan, do you think to yourself i saved a life . No. I think i did my job. Coming up hands off. Lets see what she does. Look whos behind the wheel. But hes not the one whos driving. Im not touching the brake, im not touching the steering wheel. Cars that drive themselves. Jay leno is getting ahead of the curve. That story, next. Lemme get a mcpick2 for a limited time, choose any two mcdonalds classics for five bucks. Like the 100 beef big mac, filetofish made with sustainably sourced fish, or 10piece chicken mcnuggets made with white meat enjoy the choice lemme get a mcpick2 find more delicious deals in our app. Ba da da da da hey there, can i help you with anything . Hey siri, whats at ts latest offer . Right now, switch to at t for an iphone and get one free. Wow, is that right . Yeah, its basically. Yes. That is the current offer from at t. Okay siri, you dont know everything. Well, i know you asked me to call you the at t hostess with the mostest. Okay, shut her down. Turn it off. 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I want to take you for a ride to a future where parking lots get turned into parks, where giant Auto Companies sell rides, not cars, where traffic accidents almost never happen, where thousands of lives will be saved, where you may not even own a car. You think. And it will happen when you stop driving and let the car drive itself. This is a bmw with sophisticated driver assistance. A number of cars offer it. Ill show you how this works. Consummate car guy jay leno shows us how his tesla works. Im not touching the brake, im not touching the steering wheel. You see it slowing down . It senses the truck in front of me. Yeah. Legally youre supposed to have your hands on the wheel. Right. My hand is close to wheel. Cool, no doubt. But we are living on the eve of disruption. Why would General Motors invest a half billion dollars in ride service lyft . Why is toyota partnering with uber . Why is chrysler sending minivans to google . From pittsburgh to palo alto, researchers are racing to a driverless future . Nissan thinks its simulations will soon become the raeealizatn of a new age of automobiles. Its not just cars. Mercedes has driverless big riggs in nevada. Meet sebastian. Think of him as the godfather of the driverless car. Five years ago i would run into automotive executives and they would just smile at me. Youre the crazy guy . Now the topic is hot. It took a few years but its sinking in. He runs a worldwide learning company. Before that he helped google start its driverless car program. I believe that the selfdriving car drives better than a human being. You believe that now . Yes. Instead of my wife, because she urges me have the car take over when you drive because i dont drive as well as my selfdriving car. The rush to robot automobiles began as a glean in they the eye of the pentagon. Darpa challenged tech types to build a working driverless car. Everybody knew it could not be done. And i couldnt explain to myself why it couldnt be done, so we decided to give it a try. He was teaching at stanfords Artificial Intelligence lab. He became part of a team that built a vehicle that drove itself through more than 100 miles of the mohave desert. It won the challenge. The vehicle, now on display at the smithsonian, always draws a crowd. To see a robot my students and i built through this incredible challenge and drive 140 miles through the desert and coming back unscratched, it was what did you believe then that you would not have been able to believe befo that . I believed it was possible. I saw this moment as a complete redefinition of transportation. I could see all of us driving selfdriving cars. That yomoment was tied to something that happened to him as a teenager. When i was 18 i lost a dear friend in a traffic accident. A split second bad decision killed both of them on board. It made me think about the Million People every year that die in traffic accidents. But we take it for granted. We dont even ask as a society as a question is this the right thing for us to happen . More people have died in Car Accidents in the history of the United States than in all the wars going back to the history of the revolution. Brad temple has worked building selfdriving cars at google. Its like curing polio. Its the biggest reason youll die between five and 35 is a car crash. Advocates say Autonomous Cars will take much of the death out of driving. And it wont look a lot different than the way General Motors dreamed it would 60 years ago. This is the life. Cool comfortable, mind if i smoke this cigar . But now that future once imagined is here. People wont drive and cars wont make mistakes, wont drive drunk, wont text, wont fall asleep. Some people say the goal is to bring us down to zero fa t t fatalities in cars, which would be an amazing cars. I think it will be negative fatalities because there will be people created in cars. In the fu, you will order rides from an app on your smart phone. As seen in our animation, a vehicle will arrive from a holding lot and take you to work or to school or to grandmas house. Were going to see a shift from selling cars to selling rides, which is what uber does, lyft and taxis do. When you see a shift like that, it could be very bad news for some of the big players of the old world of selling cars. The ceo of General Motors says the car industry will change more in the next five years than it did in the last 50. Could it be that selling rides is a Better Business than building cars . Maybe theyll do both. Will there be a day when General Motors doesnt make cars anymore . They just service and connect and get people from here to there . Theyre having existential crisis at the Car Companies about that very question. There will be a day as predicted in the movie irobot where the person who knows how to drive will be the outliar. What do you think youre doing . Im driving. By hand . This mutufuture, this disrup, will it be a harmonic convergence or a cat tas trastr . It depends. You tell me whether or not theyre in jep wiopardyjeopardy . Body shops. Car insurance. Going to cut to about a third. Lawyer who is chase Car Accidents . Screw them. Drivers ed teachers . Might want to look for another job eventually. Drunks . Theyre going to be able to get wasted and get home safely. Theyre going to love it. Just think of it, no more road rage, no more fender benders backing up traffic for miles. Robot cars would give us a substantial part of our lives back, like the 50 billion hours a year we spend behind the wheel be. But beware says amanda of the Natural Resources defense council, what if we really, really fall in love with Driverless Cars . One of the strange ironies of driverless vehicles is that more people would drive. If they cant move, we havent really solved any problems. Think of it as the Driverless Cars dirty little secret. Some studies say up to a 200 increase in Energy Consumption as people move farther from their job, take longer trips and even send everyompty vehicles circling through our urban areas. Then theres the tricky matter of judgment. Can you engineer realtime Critical Thinking into a machine . You could imagine a scenario where the car has to decide in a frac o its going to impact a pedestrian or bicyclist or whether its going to stop suddenly in a way that might be damaging to the occupants of the vehicle. How does the car make that decision . Does the passenger come first or the pedestrian . My understanding is that what the google engineers tell you is that they will play out all of these scenarios in advance, sort of preprogram the vehicle to make these decisions. But i think theres still some very important outstanding ethical questions. Big questions that need big answers. Answers being sought by the u. S. Secretary of transportation, anthony fox. The technology is very close. How close are we to knowing how safe they are . Thats the job we hope to begin doing as we issue guidance in the coming weeks moon s and mon fox hopes to have the from what youve seen and what youre hearing, will they be able to actually perfect the technology enough to put these things on the road . To meet, say, your departments satisfaction . I think the day is coming, i really do. Because in the end of the day, it will be up to you to put a seal of approval on it . Thats right. Theres no pressure there. [ laughter ]. But theres one more thing. What does jay leno, americas consummate car guy, think of cars that drive themselves . Well ask, next. [h avy sigh] real meal for five bucks. Real meal for five bucks. Real meal for five bucks. Real meal for five bucks. Real meal for five bucks. [deep breath] finger lickin, finger lickin, finger lickin. Gooooood with your produce stays fresh up to 80 longer. Keeping it nearly as fresh as the day it was picked. The new fresh works produce saver from rubbermaid. Buy an eligible galaxy device. One more thing about selfdriving cars, despite all their apparent advantages, its still hard for many of us to fathom letting go of the steering wheel. I predict an automobile like this, mustang, like a ferrari, like a lamborghini will become the equivalent of a snowmobile. Its something you use on weekends to have fun. Jay leno loves cars. He has airplane hangars full of them and hosts jay lenos garage on cnbc. Our guess, hed be no fan of selfdriving cars. We were wrong. Hes seen how stupid we can be on the road. Im driving once. I look over and this woman has a sweater. Shes got it over her head and shes like this. Im, what are you doing going down the highway . That person should be in a driverless car. Yeah, i dont want her on the road. But can we trust cars that drive themselves . You get on a plane. Theres nobody flying that plane. Its on auto pilot. The pilot is just sitting there. The pilot doesnt do anything. Thats a robot. The he does get it off the ground. And then they lock that door and i have no idea what goes on in there. Youre in a flying can with a machine driving you. If you trust it at 30,000 feet, why wouldnt you trust it at three feet . If youre still not convin convinced, consider this. When we were kids we predicted flying cars, you wouldnt eat a meal, youd just take a pill. Remember all that . Nobody ever predicted gps. Nobody even thought that was possible. Human behavior being what it is, maybe machines will be the answer. Im one of those people that believes engineers will save the world. New and different. If you said to someone, a car with no steering wheel, no, i dont want that. Suppose the car saw something you didnt see and stopped in time to not hit a kid on a bicycle . Yes, id like that. One less accident, one less fatality. Then think of it multiplied by millions. For sebastian, the future cant come soon enough. You told me about your friend who you lost in the car accident and you said im going to save a million lives. Do you feel like youre fulfilling that dream . I think im on the way. I think were making it reality in society. I havent quite fulfilled it yet because i havent save add million lives. But im confident its going to happen in the near future. Coming up, graduation. One of lifes big moments. Tonight, some big life advice. Walking on e beach is not a good idea. Dont shine a light on your eye. From the kids table. This is usda choice sirloin cut inhouse by a welltrained hand. And this isnt just wood. Its split american oak. And thats split american oak smoke infusing your steak with smoky juiciness. And thats no ordinary grill. Thats applebees brand new, firebreathing workhorse. Now. Does this look like a microwave to you . Only at applebees. Music pretty woman with roy orbison of course you go all out for date night. Even if youre just staying in. For whatever makes you feel beautiful. Walgreens. At the corner of happy and healthy. Now buy two select skin care products, get the third free. In stores and online. Mmmm. Mmmm. Mmmm. Yoplait. I am a lot of things. I am his sunshine. I am his advocate. So i asked about adding oncedaily namenda xr to his Current Treatment for moderate to severe alzheimers. It works differently. It may improve overall function and cognition. And may slow the worsening of symptoms for a while. Vo namenda xr doesnt change how the disease progresses. It shouldnt be taken by anyone allergic to memantine, or whos had a bad reaction to namenda xr or its ingredients. Before starting treatment, tell their doctor if they have, or ever had, a seizure disorder, difficulty passing urine, liver, kidney or bladder problems, and about medications theyre taking. Certain medications, changes in diet, or medical conditions may affect the amount of namenda xr in the body and may increase side effects. The most common side effects are headache, diarrhea, and dizziness. Hes always been my everything. Now i am giving back. Ask their doctor about oncedaily namenda xr and learn about a free trial offer at namendaxr. Com. Its commencement season. Graduates everywhere are getting lots of lofty advice on life, happiness, success. But the wisest words of all just youre about to enter the most uncertain and thrilling period of your lives. Who do you want to be . Listen to that voice that tells you what you could do. You can go to places that you like to go. I would like to go to the pizza place. When youre trying to find a job, take a job that you want to do and not that other people want you to do. If its like raining, then its a rainstorm. You have to stay inside. After dinner i wanted a piece of candy. And like they wouldnt let me have a piece of candy. You have to stick with it. You have to be persistent. And i started yelling at them and they should have gave me the piece of candy. You should be kind to others. Do not forget the people who helped you. Dont get mad at your husband if you ever marry. Walking on the beach is not a good idea. Crabs might pinch your feet. [ laughter ]. You all have to figure out how to balance success, happiness and ambition. You shouldnt climb on tables. Dont jump off a cliff. Do not take other peoples medicines. You should never rob, you should never like murder someone. When you see things that are broken and you will see things that are broken, go fix them. If you accidentally broke something on purpose, you would say sorry. Dont shine a light on your eye. Did you try it before . Yep, ive tried it before. 2016. [ cheers and applause ] [ laughter ] coming up, you stand back and you go whoa, what did we do . Hes the guy who inflated three air mattresses into a 25 billion company. The spare room to riches story behind airbnb. For effortless shiny wow nails so you can step out with that amope confidence and shine on the electronic nail care system from amope. Find it in the footcare aisle. Were in the middle most nights, this is the potty. So we added tide rescue to the wash. It cleans super deep down where detergent just doesnt. Progress introducing tide rescue. Eliminates tough odors at the source. Find it in the stain remover aisle. [h avy sigh] real meal for five bucks. Real meal for five bucks. Real meal for five bucks. Real meal for five bucks. Real meal for five bucks. [deep breath] finger lickin, finger lickin, finger lickin. Gooooood next, a story of how to become a billionaire. Start with three air mattresses, rent out a room in your home and end up with a business bigger than most hotel chains. Tonight the man behind it all shares his play book for success. Hes also about to share his fortune. This is going to be really cool. Hes just 34 years old. Already a billionaire three times over. You want to play guitar . Hes the ultimate changechanchange gamechanger. But you might not have heard his name. Brian chesky is the guy who runs and cofounded the home sharing website airbnb. Were you surprised at highow quickly this concept grew . Yes. I never even heard the word entrepreneur growing up. To me the story of brian chesky is the story of the american dream. New york times columnist and cnbc anchor says hes a visionary. He has revolutionized the hospitality world, tourism, real estate and trust, the way we trust each other. Airbnb connects strangers, both owners and renters for shortterm stays. Owners post pictures and descriptions of their properties which could be spare bedrooms or entire homes. One attraction for renters is that the rates are usually lower than hotels. We didnt invent the idea of somebody staying in someone elses home. I think we created a simple way with trust to connect people all scale that has never been seen before. Airbnb now has more than 2 million listings in this 191 countries. The company gets a cut of each rental and is worth more than almost every giant hotel chain. Warren buffet witshes he came u with the idea. Brian took something very ordinary, lodging. And he saw a different way to do it. Brian chesky grew up in a suburb of albany new york, he was a star hockey player and an artist. His parents debra and robert are retired social workers. Theyre still surprised at the path their son took. Honestly, this is the last thing we would have thought of. He was very much into art and sports at a very young age. Got him a drawing board, sketch pads. He just kept drawing and doing all that type of stuff. Island school of design where chesky showed off a bit of a cheeky streak, dancing to billie jean at graduation. After college he ended up in San Francisco, nearly broke when he as his roommate had a eureka moment. We couldnt pay rent. We realized we have extra space. Why dont we provide a house for designers who didnt have extra beds. It was only a way to host these three people that one weekend. This was a recreation of the original apartment that joe and i started the airbnb in that very first weekend in october of 2007. Almost every little piece has been created. This was the original crash pad . This was the original place. One of the couches in this room was the one that they stayed on. So you had cos mattress. Yes. In many ways that was the bedrock of the whole idea . That first weekend i did not predict three People Living with you, it takes like a year or twoyear relationship and it contracts it into a matter of days. Youre sharing the kitchen, the bathroom. By doing that, you get to know somebody really quickly. You become extremely close. We were waving goodbye and immediately thought if people knew or could experience what we just experienced this could be an idea that would spread around the world. The roommates quickly realized theyd stumbled on a concept for a whole new business. Starting with a simple website, chesky and his roommate and a third partner recruited others to rent their places. Week by week, year by year, the listings grew from one city and one country to another. What do you know now that you didnt know when you started . You start a company they think its all about having an idea. When you run a company, you realize you need to have an idea like every hour. Maybe his best idea was to ask for advice. Hi sought out luminaries like Mark Zuckerberg and warren buffet. We talked for hours and hours. I love talking to a guy like brian. I learned something. Hes enthusiastic about his business like im enthusiastic about mine. In the nine years since airbnb started chesky has become a titan in whats called the sharing economy. That includes Companies Like uber and wework. Thank you everyone for coming today. But chesky and airbnbs success has not been without growing pains. I dont want to dissuade you of the view that there are questions about this business model, because there are. Apartments and other pieces of real estate that were never supposed to be rented that now are. How did the neighbors feel about that . Thats what we feel. Its ri rironic in your homey there was a ballot essentially aimed at placing restrictions. The San Francisco measure targeting airbnb was defeated. But criticism continues. This past week, tv ads sponsored by a group of housing advocates and the Hotel Industry alleged racism in the airbnb booking process. I am a black woman. I get declined all the time on airbnb. New york city public advocate Leticia James is a critic. They need to issue a zero tolerance policy for discrimination. Airbnb announced on thursday it is undergoing a review to make sure everyone is treated fairly. Chesky tweeted that discrimination and racism have no place on airbnb. There have been other complaints about safety, breaking zoning laws and not enough vetting of owners and guest. How does the organization make sure that everyones okay . The foundation of this is really having a real identity. One of the core ideas we had is theres no strangers on airbnb, theres no anonymity. We have this program called verified id where we ask you and this is continually set for rolling out we ask you to put on record a copy of your government id. And there are other issues. Unfortunately airbnb is taking too many Affordable Housing units off the market. Its your contention that some of the places that airbnb has on the markeul otherwise be available for rent . It is illegal to rent out an apartment for less than 30 days. But unfortunately a significant number of individuals are using sites as airbnb to rent out their apartments that otherwise could be used for Affordable Housing in new york city. Are you undermining the rental market in some of these communities, places where the demand exceeds the supply . I mean, i think we have a very primary view, which is that we want to be part of solutions in cities, not part of a problem. So we only want people to share homes they live in. I believe in the city even if there is a kind of rental contraction, if people are renting the homes they live in, then by definition theyre not taking homes off the market and in fact helping them stay in their homes. The reality, critics say, is that thousands of new york apartments on airbnb are not owner occupied. Yet to untold numbers of people making extra money, chesky is a life safer. I think hes provided a great service. Nebraska homemaker carrie and her husband rent out this spare room above their garage for 75 a night to help pay for their Daughters College tuition. It provides extra income that we normally wouldnt have. Brian cheskys latest market may surprise you. Cuba. We met up at an airbnb in havana. Ive never been to another place like this before. Reality check time. Yeah. Former hockey playing kid, grew up outside albany in cuba. Part of a president ial trip touting a multibillion Dollar Company in a communist country. How does that feel . You put it that way. Its very surreal for me to be here. I never imagined growing up ever traveling to cuba, let alone having a platform where we have over 4,000 homes here. So its just incredibly humbling and gratifying for me. Amidst the vintage cars and a skyline essentially unchanged since 1958, chesky is pushing the future fast forward. You do battle in San Francisco, your hometown. Yet you come here and youre blossoming. Absolutely. This is your Fastest Growing market. How is that . Havana is growing faster than new york was at its age one year in. In havana chesky and airbnb were held up as shining examples of american sbentrepreneur shipy president obama himself. Whats the valuation now . Quite a lot. Dont be shy. 25 billion. With a b . Are you competing with hotels or are there people who would stay in this gorgeous house here and take this trip because they can stay in this house . I think that, you know, for us to win, first of all, i dont think anybody has to lose. So you can peacefully coexist with hotels . Everybody thrives . I believe we can. Its a multitrillion dollar industry. Hotels are doing better than ever since we started airbnb. I think theyre going to continue to do well. But of course airbnb can offer a few settings a hotel chain cant. Among unique listings recently, in california a mushroom dome. In paris, a chance to stay in the catacombs. And in amsterdam, an entire grounded klm airliner was for rent. With all of airbnbs success, cheskys personal net worth is estimated at 3. 3 billion. Just this week he and his cofounders signed up for the giving pledge, once again following the guidance of warren buffet. The giving pledge asks people to pledge morally not legally very wealthy people will give away at least half of their money if not in their lifetime then at death. What they can do can be huge. For now at least chesky is one of the richest young people on the planet. He and his girlfriend travel the world together. So i had to ask when you travel do you stay with an airbnb host . Of course. I just came back from tokyo. We did a week vacation. Do they know who you are . I try not to tell them who i am because i want to see the experience that other guests are getting. I dont want to get a special experience. Sometimes they figure it out. Coming up, a fighter and a father. I said, hey champ, can i get a picture of you with laila . Remembering muhammad ali. Rn double cash back the citi double cash card. How do you choose a mcpick 2 . Et a mcpick2 are you a beardstroker . Or a visualizer . Perhaps youre a handwarmer. A lippursing eyebrow shifter. Or maybe a doalittledancer. 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Januvia works when your blood sugar is high and works less when your blood sugar is low, because it works by enhancing your bodys own ability to lower blood sugar. Plus januvia, by itself, is not likely to cause weight gain or low blood sugar hypoglycemia . Januvia should not be used in patients with type 1 diabetes or diabetic ketoacidosis. Tell your doctor if you have a history of pancreatitis. Serious side effects can happen, including pancreatitis which may be severe and lead to death. Stop taking januvia and call your doctor right away if tell your doctor right away and stop taking januvia if you have an allergic reaction that causes swelling of the face, lips, tongue, or throat, or affects your breathing or causes rash or hives. Kidney problems sometimes requiring dialysis have been reported. Some people may develop severe joint pain. Call your doctor if this happens. Using januvia with a sulfonylurea or insulin may cause low blood sugar. To reduce the risk, your doctor may prescribe a lower dose of the sulfonylurea or insulin. Your doctor may do blood tests before and during treatment to check your kidneys. If you have kidney problems a lower dose may be prescribed. Side effects may include upper respiratory tract infection, stuffy or runny nose, sore throat, and headache. For help lowering your blood sugar talk to your doctor about januvia. Finally tonight, an intimate look at muhammad ali. Michael gaffeney was alis personal photographer in the 70s. Now he shares some rarely seen images with us. He was the most known and popular person in the world at the time that i was a photographer for him. People related to him. They loved to see him. He brought out smiles everywhere we went. When he fought, he lost the fight. He was resolute in regaining the championship. That is probably one of the most significant pictures i took of him, because that shows the true spirit of a champion. I said, hey champ, can i get a picture of you with laila . And he said sure. And so he knelt down on the floor and was just just just holding her. And to me, its one of my favorite photographs because it totally shows a different side of ali, a father. He was a relentless warrior in the ring. He was never knocked out. He was knocked down. But he also showed a great will to survive fights and get up. He said, a champion has to have the skill and the will. But the will must be stronger than the skill. And that was something that he carried through his whole life. Well have more coverage of muhammad ali tomorrow on today, his daughter laila. And ill see you tomorrow on nbc nightly news. Im lester holt. Thanks for joining us. To be the best is to compete against the best. Its so much more than physical. Its mental, and its in your heart. Hope when the crowd screams out theyre screaming your name american Ninja Warrior means challenging whats impossible. Ive lived my whole entire life proving people wrong, and im not about to stop now. Hope when your moment comes youll say i i did it all i i did it all