Hilarious commercials. Trying to do so many things at the same time . Tonight he takes us inside the world of spokesperson stardom. One tuck in, and one tuck out. But first, the nightline five. What you doing . Prepping for my bosss party good evening, thank you for joining us. Tonight the stunning revelations about the mother and son on the run and the takedown in mexico. The afluna teen ethan couch, who killed four people drunk driving and his mother. Theyre in custody. They may even have had a party before their escape. Matt gutman has the latest. Reporter the threeweek manhunt for the privileged teen ending with ethan couchs arrest on this gritty street in puerto vallarta, mexico. You see him cuffed and loaded into a police van. This photo confirming 18yearold couch and his mother tanya were detained monday evening. The mother who refused to sit still to be photographed herself, apparently changing her look. The son, dyeing his blonde hair black. The trance formation, so different from the childish killing four people in a drunk driving krar. Theres four or fiver kids. Oh, yes, theres another child in the ditch. E on, my god. In the sentencing, his legal team claimed he suffered from affluenza, too rich and too spoiled to know right from wrong. His sentence, only ten years probation and no jail time. A break for investigators coming on christmas eve, a week after this post was released, offering a 5,000 reward for any information, saying that he was on the run in this black ford truck, belonging to his mother tanya, who was also missing and believed to be with him. They have probably driven that to the border and crossed over. Reporter adding that before they set out on there 2,200mile trek, they even had something akin to a goingaway party before they left town. Reporter mexican authorities were alerted on december 26th and last time they got him. Its like trying to find a reporter according to officials when the pair arrived in puerto vallarta, they checked into this beachside resort. A tremendous amount of tourists down there, so American People were prevalent everywhere and they wouldnt be somewhere they would stick out. But then they relocated to this shabby Apartment Building on a quiet street. But not Many Americans in this neighborhood where residents said ethan stuck out. Eyewitnesses say they were escorted by police out of that door, their hands cuffed behind their backs. They said they didnt resist, didnt struggle. Two months ago, we tried to track him down. He was on probation. Hed never apologized for the deaths. They dont come to work at regular hours. They dont keep regular hours. So its been really hard finding them. But he wasnt looking you he soon surfaced again in this twitter video that went viral. It appears to be couch at this boozy party, possibly violating his prorkz. It prompted couch and his mother to flee, ditching his check in with his probation officer. Tonight hes in custody, but the kid who set off an International Manhunt may only get up to 120 days in jail. Hell be out of prison as soon as he turns 19 in april. The next step for prosecutors is to try to move this case from Juvenile Court to adult court. So if theres any other kind of violation here, he could be facing serious time behind bars. Reporter it all started on the night of june 15th, 2013. His bloodalcohol was three times the legal limit when he got behind the wheel of his fathers soupedup, red pickup truck after a night of partying. Gunning it to 70 miles an hour, he lost control of the vehicle plowing into a group of people there. Bodies scattered hundreds of feet. 15yearold Lucas Mcconnell survived the crash. You were the sound of metal crunching, glass breaking. Glass breaking and tires screeching. The car that we were in got hit and we got shot across the road. Nailed the tree. The back window was commeel shattered. Lucass father pulled up to the crash scene just moments later. It was chaos. There were people lying around, injured, hurt, dead. People yelling screaming help me. The teen behind the wheel, ethan couch, walked away from that mangled truck. Once ethan couch was found, the story came together quickly. Not only was he drunk, but there were traces of thc, val yum and some other drugs . Right. Which were bad enough on their own, but combine those with challenge, just a recipe for attorney came onto the case just a day after the crash. He charged ethan with everything he could, including four counts of intoxication manslaughter. He wanted the poor little rich kid to do some bigboy time. We were hoping for and asked for 20 years. But he was tried as a juvenile. During the defense team, his defense team dropped that curious term, a influenza. The judge sentencing him to probation and time in a rehabilitation facility. The couches have settled lawsuits without admitting any wrongdoing but not before depositions were taken in one last case. Ethan couch. For the first time, the boy and his parents at the center of this story were forced to speak. Own, marijuana, cocaine, xanax. I think i tried ecstasy once. Pretty sure that was it. Half the time his parents testifying they allowed their young son a lot of freedom, including driving at the age of 13. You understood if he was at any time he was under 16, he was never to be driving by himself . Yes. Nevertheless, you allowed that behavior to happen, correct . Yes. I just kept asking because i wanted to. Eventually they started letting me drive, just to like the corner store by myself. Before the deadly crash, ethan was required to complete an alcohol awareness course and eight hours of Community Service within 90 days of a previous incident. We didnt do the Community Service. You understood, did you not, that he was likely to continue there werent consequences . I should have known that, yes. I reaeay didnt think that was happen again. At one point, ethans parents branded in the media as the worst parents ever. I dont think were profoundly dysfunctional. Did you teach ethan thaha wealth brought privilege . I dont believe that i ever intentionally tried to teach him that. Do you recall ever disciplining ethan for anything . Sometimes i would take Little Things away from him. Or we would just discuss the problem. When is the last time you recall disciplining ethan for anything . I dont remember. Reporter but now ethan and his mother tanya are both in custody and said to be deported back to the u. S. Within the next 24 hours, to face the consequences. Suspicion that his mother was assisting him and helping him. Which has proven true. Reporter so far authorities havent uncovered any evidence but they say they have enough reason to punish t t mother. They expect her to be charged with the thirddegree felony of hindering an apprehension. Amazingly, his mother could face more jail time than him at this point. Because hes in Juvenile Court. He can only face up to 120 days. Shes facing the possibility of up to 2 t t 10 years behind bars. Reporter for nightline, im matt gunman, in puerto vallarta, mexico. Next, were going to a Demolition Derby, where some of the most aggressive drivers might surprise you. And later, meet the trif ago guy. Funny ad campaign . Wildlife rescue workers open up a lot of dawn. Tough on grease. Yet gentle. Dawn helps open. Something even bigger. Go to facebook. Com, dawn saves wildlife. Fact. Advil pain relievers are used by more households than any other leading brand. To treat their aches and pains more people reach for advil. Relief doesnt get any better than this. Advil. Ive got two reasons to take care of my heart. Thats why i take meta. Meta is clinically proven to help lower cholesterol. Try meta today. And for a tasty heart healthy snack, try a meta health bar. Come on,why ya sleepin . Come on what time is it . Its go time. Come on. Lets go, lets go, lets go. Woooo hoooo yeah i feel like i went to bed an hour ago. Yeah ill make the cocoa. Get a great offer on the car of your grownup dreams at the mercedesbenz winter event. Its the look on their faces that make it all worthwhile. Hurry, these offers end january 4th. Thank you santa hey amanda, sorry to bother you but i gotta take a sick day. Moms dont take sick days, moms take dayquil severe the nondrowsy, coughing, aching, fever, sore throat, talk about a double life. At home the women youre about to meet are moms. But at night, they switch from carpool duty to Demolition Derby, and theyre dead serious about winning. Heres abcs david wright catching up again with these crash queens. A rumbling arena, a roaring crowd, and gladiators gunning gasguzzling machines. Competitors ready to destroy each other. This is metal mayhem. 20,000 in prize money at stake. Among those drivers reffing their engines are moms. Some of the toughest women on wheels. Any woman that gets in a dirty car the first time either is hooked or two girls, parttime Little League coach. Are you practicing . Yes. Reporter who, when shes not carpooling the kids, can crash them up with the best of them. Its an adrenaline. Its Something Different. You dont normally get to go hit people. Reporter shes prepping for her biggest competition so far. Where shell be squaring off against 300 top derby drivers, including her husband, chris. Not the first time thats happened. Reporter building the cars from scratch is a family affair. The kids pitching in. The cars are engineered to do one thing on the road and were doing Something Different with them to do what you need it to do, to last, thats part of the fun of it. That will get me to the floor. Reporter they strip out anything that can break or burn. Hes cutting the old motor mounts off because they were welded on the frame. Survive crashing into this. Thats vicki schutte. In 15 years, ive won three features. Reporter a welder by day, a useful trade in this sport. Her destructive tendencies have paid off. I was the only girl thats ever one my hometown derby, so that was a really big accomplishment for me. Lets start stripping. Ive been d dng the Demolition Derby since i was 19 years old. My dad has done it since before i was born. Reporter her two sons, 14 and 8, already behind the wheel. Do you have a license . Not yet. [ laughter ] reporter her uncle runs metal mayhem every year. Are you ready reporter Demolition Derby can be a dangegeus game. After all, the Main Objective is crashing. Its just whichever car keeps moving forward . The guys have pretty much stopped the derby. Do injuries happen . They happen. We have a list of rules that we have to build the car to, so theyre looking to see that everything is built properly and that the car is safe. Reporter kims passing with flying colors, but vickis car has a problem. The spray foam. I dont know. Youre kind of a bad ass, arent you . Reporter which leads to a frenzy of modifications as fast as possible. I need you to pull out as much foam as you can. Reporter her car is ready. Im hoping not to have a small error take me out. Reporter meanwhile, kim is getting revved up for battle. They m m call this the powder puff heat, but theres nothing for vicki, a serious hitch. Exactly what she was worried about. Her drive shaft fails. Her car is a sitting duck. The minute before he said go, i made one hit and was done. I was devastated. My eyes filled up with tears, because it was a lot of hard work was put into that car. Good job reporter kim, muddy but victorious, moves on to the finals. 20,000 for first place. Reporter but theres no time to celebrate. This point right now is the most pressure, its the biggest. Everybody trying to work to get the other and make it back out. Reporter having already survived some serious scrapes, her car has to be fighting fit for the main event. He wiring were trimming and everything done, but this is it. It wont be pretty, but shell be functional. Reporter and her former rival vicki shows up to help. Vickis helping. She didnt make it and now shes helping. Reporter the sisterhood kicking in, because that final heat is all men except kim. 50 drivers, a lone woman, against 49 men. Do the men go after the women . It can be. I mean, were easy targets, apparently we dont know what were doing, so [ laughter ] we like to prove them wrong, thats for sure. Reporter the main event. Come to michigan, girl. Yes, sir. Reporter once they put on those helmets, its tough to tell the men from the woman. Its a free for all. The last, not kims day. Carpool tomorrow. But alreadyyhes thinking about her next metal mayhem. Im david wright for nightline in illinois. And next, around the world with the trivago guy. How he literally stumbled into fame. Abc news nightline, brought to you by pfizer. Ry ellen, and i quit smoking with chantix. I have smoked for thirty years and by taking chantix,x, i was able to quit in three months. And that was amazing. Along with support, Chantix Varenicline is proven to help people quit smoking. It absolutely reduced my urge to smoke. Some people had changes in behavior, thinking or mood, hostility, agitation, depressed mood and suicidal thoughts or actions while taking or after stopping chantix. Some had seizures while taking chantix. If you have any of these, stop chantix and call your doctor right away. Tell your doctor about any history of Mental Health problems, which could get worse or of seizures. Dont take chantix if youve had a serious s lergic or skin reaction to it. 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This is the best block of all. Its like candy cane lane. I know. Oohhh. Oh, holiday ferris wheel. I kind of love it. Look at those reindeer. Jeffrey, youre awfully quiet back there. I was just thinking. Maybe its time we finish this test drive and head back to the dealership . That is so jeffrey. Soooo jeffrey. So jeffrey. Oh. Elves. Its practically yours. But we still need your signature. Zero due at signing, zero down, zero deposit, and zero first months payment finally tonight, think of your favorite commercial and youll probably think of a favorite spokesperson too. The right face can make or break an ad campaign, and trivago guy. His offbeat appearance in their first commercial will have you laughing all over again. Did you notice that theres so many prices out there for exact same room . Reporter tim williams is known as the trivago guy. When i shop in miami, i need to be connected. Reporter lots of people want to know what his deal is. I come from houston, texas, and made my way to new york to study acting. I working on my socalled life with claire danes. Then the sopranos. Reporter but its commercial success that has women and men obsessing over his laidback look that also comes with a little criticism. Tuck in your shirt, you badly dressed trivago guy. Okay, is that enough . Reporter joins the ranks of progressives flow. The most sbrg man in the world. Making a career out of advertising one company. He moved to germany. My agents in new york said, are you crazy you dont speak german. I said ill learn it. And then i ended up on a tv show translated to good times bad times. I had to shoot on monday and on thursday and friday i had to shoot trivago. And then we realized that okay, none of the belts seem to be fitting the belt loops. So we went out without the belt. Trivago does the work for you. Reporter a wardrobe malfunction. Put him in the world of the advertising elite. Speaking of celebrity, it was the late american politician in newspaper editor Horace Greely who said fame is a vapor. Riches take wingsgs