laden. neither the u.s. or pakistan has confirmed a drone strike even occurred. gunfire sends demonstrators scattering in western syria. this is hama, syria, where police fired indiscriminately into this massive crowd of anti-government protesters. arwa damon is watching events in syria from lebanon. >> reporter: what we saw on friday was tens of thousands of people, according to activists and eyewitnesss, gathering in various neighborhoods, trying to converge on the main square in hama when eyewitnesss tell us syrian security forces as they have repeatedly in the past according to eyewitnesss, indiscriminately opened fire on people peacefully demonstrating, people who were unarmed. >> a human rights group estimates 80 people were killed in that crowd yesterday. arwa was reporting from lebanon because the syrian government does not allow cnn to report from there. turning to u.s. news, jurors in the casey anthony murder trial are getting an education in forensic science. anthony is accused of killing her 2-year-old daughter in 2008. today's evidence is focusing on microscopic evidence, namely hair found in the trunk of casey's car. >> the hair swab was dissimilar to the head hair samuel identified adds coming from casey anthony. the head hairs in q-12 exhibited similarities to hair in a hair brush belonging to caylee anthony. >> the prosecution has alleged that little caylee was in the trunk of her mother's car. >> we'll have a live report from the trial in about 20 minutes. in wildwood, new jersey, an 11-year-old girl trying to have fun on a class trip fell 100 feet to her death from a ferris wheel. she was on a class field trip. this is the first time anyone has fallen from that ride since it opened in 1985. people attending a high school graduation ceremony near san antonio, texas, will be able to pray publicly. a federal court of appeals lifted an order banning public prayer at the ceremony ruling against an agnostic family that wanted to ban prayer. an e. coli infection has killed at least 18 people in europe. the v cucumbers, tomatoes and lettuce from germany and spain will be tested before being sold here. there are tips from an expert on food safety, on how to protect your family from e. coli. >> it's often present on meat, raw beef particularly. so make sure you cook those hamburgers properly. second risk is on fresh fruits and vegetables. make sure you wash them. if they come already washed, you're fine. if not, wash them. if you can peel them, peel them. the third area of risk is milk. make sure the milk you drink is pasturized and nat raw. >> lots of great information there. four americans have gotten sick after returning from europe. but there are no known cases of e. coli food contamination here in the united states. let's get back to our top story of the hour. the death, still unconfirmed, of a major international terror suspect, a top leader in al qaeda. cnn's phil black is in islamabad getting more information on this. phil, why is it that we don't yet know if he's dead or alive? >> reporter: well, richelle, at the moment officials in pakistan, its military government and intelligence and u.s. officials as well, none of them are prepared to confirm this. we are told by his followers that ilyas kashmiri was killed in a u.s. drone strike in the tribal areas of pakistan overnight. the reason we're not getting official confirmation yet may be because he has been targeted in the past. he has narrowly escaped a number of strikes, and especially one in september 2009 where it was declared that he had been killed. he surfaced the following month in a newspaper article to prove that wasn't the case. but if it is true this time, it would certainly represent a significant hit for al qaeda following so closely from the loss of its leader, osama bin laden. >> tell us more about kashmiri. he is just one of many high-ranking al qaeda figures that are often targets. >> reporter: it's true. these drones hunt and prowl over the skies of this tribal area of pakistan looking for key militant leaders. but he is certainly one of the top figures that the u.s. has been looking for for some time. he started cooperating with al qaeda only relatively recently. he has a reputation for great daring, great skill and also great success. he is considered or was considered a highly respected and highly feared militant leader, one whose name has been linked to a long list of terror attacks in this region, including the attack in 2008 that killed more than 160 people. the reason why he has become such a wanted figure in recent times is that he has been assessed as someone with the ambition and ability to carry out attacks on that scale much further from this region, potentially even in the west. >> that explain why he is such a high-value target. we still don't have confirmation. phil black from islamabad, thank you. conservatives gathering in washington this weekend hear from a lot of candidates hoping to be the next president. shop from anywhere. and are always connected. we live in a social world. isn't it time we had a social currency to match? membership rewards points from american express. use them to get the things you love from amazon.com, ticketmaster.com, and more unexpected places. they're a social currency with endless possibilities. but when she got asthma, all i could do was worry ! specialists, lots of doctors, lots of advice... and my hands were full. i couldn't sort through it all. with unitedhealthcare, it's different. we have access to great specialists, and our pediatrician gets all the information. everyone works as a team. and i only need to talk to one person about her care. we're more than 78,000 people looking out for 70 million americans. that's health in numbers. unitedhealthcare. try capzasin-hp. it penetrates deep to block pain signals for hours of relief. capzasin-hp. take the pain out of arthritis. a galtherring of christian conservatives in washington is a big draw for republicans who want to be president. here is a sampling of what some of them had to say. >> we're united tonight in a lot of things. we're united in the love we have for this great country. we're united in our belief in the sanctity of human life. we're united in our belief in the importance and significance of marriage between one man and one woman. >> traditional marriage matters, and we need to tell each other and the country that we need to keep traditional marriage elevated on a platform all domestic relationships are not the same as traditional marriage. it needs to be protected. >> the family is the bedrock. the educational system should be through the family and church. we should be promoting home schooling and private cooling and not depending on the public school system. >> i love a fired up ron paul. let's bring in shannon travis, he joins us live from the faith and freedom coalition conference. it seems this conference is a way to merge social conservatives with economic conservatives, people like the tea party. it seems that that's where this is going. is that right? >> reporter: that's absolutely right, michelle. the reason why you have ron paul fired up, mitt romney fired up and a lot of these candidates coming is because they know that these voters here can help push them over the top in early voting states like iowa and south carolina. this is early key. this is one of the first, earliest and arguably the largest effort to merge those two factions of conservative activists, the economic conservatives who rale against government spending with the cultural conservatives. typically we see them out there against gay marriage and abortion. this is designed to bring the two groups together and say, hey, you know what? we'll be taking on a huge political fight with the democrats in 2012, we need strength in numbers. >> shouldn't we have seen this coming, the republicans trying to find a way basically to come together? >>. >> reporter: absolutely. politics and winning elections is all about coddling your factions together, trying to get your supporters -- even if they don't necessarily agree on everything, try to get them to agree on something so they can come together in upsupport of a common cause. i spoke with ralph reid, long-term conservative power broken and the force behind this week's conference. i caught up with him earlier and said, hey, tea party activists have said we don't want to touch those cultural issues, we want to stick with economic messages. he said, you know what? i don't have a problem with them staying on that very narrow band of message, but we need to come together for the sake of just defeating obama and defeating democrats. he is willing to say, okay, you don't have to deal with the social issues or whatever. if you will, that's fine. but you can stay away from that stuff so long as we come together and fight the democrats. >> all right. pretty powerful conference. political producer shannon travis, thank you. before president obama visited auto workers in toledo, ohio, yesterday. he decided to make a chilli dog run. >> bowl of chilli and fries. >> silly chilli and fries. >> he looked so serious ordering. it sounds great. the president dining with toledo's mayor at a place called rudy's hot dog. the owner was told only minutes before the president got there. a so-called aids baby is all grown up and now having a baby of her own. what a difference three decades can make. you really want to hear her story. [ artis brown ] america is facing some tough challenges right now. two of the most important are energy security and economic growth. north america actually has one of the largest oil reserves in the world. a large part of that is oil sands. this resource has the ability to create hundreds of thousands of jobs. at our kearl project in canada, we'll be able to produce these oil sands with the same emissions as many other oils and that's a huge breakthrough. that's good for our country's energy security and our economy. that's good for our country's energy security we're going to head on into the interview. mr. and mrs. nadimpalli... baba... what's the difference between the fusion and other hybrids? the look. yeah, it doesn't look like a box. we wanted a hybrid and we wanted... didn't want it to look like a hybrid. and ford hybrid was fantastic for that. what are your favorite uses for sync? movie listings for me. yeah, i do everything with it. who uses the navigation system the most between the two of you? this weekend marks 30 years since the first case of hiv/aids was reported. a lot has changed in the diagnosis and treatment of this disease. our chief medical correspondent, dr. sanjay gupta, talks to a woman who was an aids baby but now has given birth to a baby of her own. >> lisa gibson didn't always want to be a mother. >> i wasn't ready for a baby. i was too busy focusing on my career and on changing the world. >> reporter: changing the world by teaching people about hiv. at age 17, she learned she had aids. she was watching television when her doctor broke the news to her by phone. >> the tv went black. everything else went black. nothing else mattered. now it was like, wow, i'm going to die. >> reporter: alisa hadn't done drugs, she had had sex but used a condom. what she didn't know was that her mother was hiv positive and had passed the virus on to her at birth or through her breast milk. she and her mother are now both on medication and in good health. when alisa met darrell hunt, show told him she had hiv and she insisted on safe sex. >> i felt that i loved her and we had a very good connection and it was just -- it was worth it. >> reporter: but one night the condoms failed and two her surprise, alisa got pregnant. unlike her mother, she knew she could protect her unborn child. >> i think the vast majority of infections from mother to child are preventable. there's no reason that they cannot have a child. given the current therapies we have, we believe the transmission rate can be less than 1% even in that population. >> reporter: she stuck with her anti rhett row viral medication. after little darrell was born, he took anti rhett row viral medication as well. it worked. he's hiv-free, as healthy as any little boy you might find. she wants to be a role model. >> we try to do as many things as we can together. again, there wasn't anyone like that that i could see when i first found out, so just to show people that you still can find love and find happiness or have a good family, do whatever you want with hiv. >> reporter: dr. sanjay gupta, cnn reporting. >> how beautiful is that? be sure to watch sanjay gupta m.d. tomorrow at 7:30 eastern on cnn. an estimated 25 million young people are infected with hiv according to the world health organization. patricia sawu is making sure her community and country get information to stop the spread of this disease. that's why she's our cnn hero of the week. >> back in the 1990s i believed that aids was a punishment from god. when i tested hiv positive, it was oh, my god, how did this happen to me. i fasted and prayed for years hoping that i would be healed. when i went public, i lost my job. my husband lost his job. the landlord wanted us out of his house. the stigma was terrible. i realized that i had been work. my name is patricia sawo. my mission is to change pem's attitudes about hiv. >> all you need is accurate, correct information. >> we need to shepherd the people. hiv is not a moral issue. it is a virus. i do a lot of counseling. when i'm helping somebody else who is hiv positive, i want them to know that you can rise above this. the 48 children at the center, most of them saw their parents dieing of aids. my hiv status brings some kind of a bond. i provide that motherly love and all their basic needs. hiv is making me a better person. we want to be there for people. so if we have it, we share it out. it's what i want to do because it's what i'm meant to do. god has his own ways of healing. so for me, i'm healed. >> she says she is healed. wow. we always want to hear from you. tell us about the heroes in your community. send your nominations to cnn.com/heroes. casey anthony caught in a pattern of lies. what forensic evidence is now revealing about the case? 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[ female announcer ] roc multi-correxion. correct what ages you. -aging... -bring it on. today's testimony is revealing in the casey anthony trial, that's in just a moment. let's check our top stories. a militant muslim group says its leader, ilyas kashmiri was killed by a drone missile strike last night in pakistan. many experts expected kashmiri to take over the leadership of al qaeda. so this is huge. the united states says the only country capable of sending drones into pakistani aerospace is the u.s., but no comment from u.s. officials. long-time diplomat lawrence eagleburger died at the age of 80. he served as sex tear of state underment george h.w. bush in the early '80s. john edwards says he did not break the law. he pleaded not guilty yesterday to charges of conspiracy and campaign law violations. prosecutors say edwards broke the law when he accepted $900,000 to hide an affair with a campaign worker. testimony in the murder trial of casey anthony is in a new phase today, getting into the scientific evidence of the florida mom accused of killing her daughter caylee in 2008. it's talking about microscopic evidence found in the trunk of her car. sean lavin is outside the courthouse in orlando. people are grasping that they're having court on saturday mornings. one of the reasons is that the judge wants to get this see questions centered jury back home as soon as possible. get us up to speed on who was on the stand this morning. >> reporter: that's right. they brought the jury in from pinellas county, about an hour and a half away. they want this over with. this morning casey anthony came into court about 9:00 a.m., then we had the fbi expert, karen lowe come in. she was talking about the hair found in casey anthony's trunk. she testified this hair had a special parking on it consistent with decomposition. because of that she believes that hair represents caylee's decomposing body. take a listen to what she said in court earlier today. >> the hair was microscopically dissimilar as to the sample identified as coming from casey. the head hairs in q-12 exhibited similarities to a hair found in a hair brush which was identified as belonging to caylee anthony. >> reporter: now, the lead attorney for casey anthony did not want this testimony to be heard today. he made an objection to it right out of the gate this morning. the judge overruled it and let it in. now he has to attack it to try to convince that jury they shouldn't listen to it. >> jose baez also filed a lot of motions leading up to this hoping it wouldn't be admitted. it's not just hair samples rnlgs it's the controversial air tests, air samples from the trunk as well. talk more about that. i understand the defense attorney jose baez also considers this junk science. >> reporter: that's right. baez calls it junk science. basically they take air samples from the trunk of the car and based on the quality of the air they can project there was a decomposing body in there. today was the first day someone from the state came up. they called the orange county sheriff's office supervisor to explain a little bit about it. we expect the state to call a doctor to the stand sometime next week, most likely to explain about it more. we'll hear more about this case, the air tests in this case very soon, richelle. >> sean, in recess until monday morning at 9:00 a.m. earlier i spoke to our legal guys about the casey anthony trial and about whether her admitted -- >> the fact is the burden of proof beyond a reasonable doubt, michelle, is overwhelming, and the fact is that the lack of -- >> which trial are you watching? >> richard, wait a second. i'm watching the same trial every day. the fact is, despite whatever problem there is with the defense counsel, it is her behavior introduced methodically, carefully, by the prosecution that's going to do this defendant in. the very point that's been made that, well, when she takes the stand and puts her hand on the bible -- let me tell you something. a lot of people disagree with this, richelle. they'll have to put casey anthony on the stand for a variety of reasons, not the least of which the jury will see there's clearly something wrong with her, and that's what the strategy is here. >> richelle, richelle, richelle, they have to prove in order to get the premeditated murder that casey was the one that put the duct tape on her face, her mouth and nose. they have not proven that. they are not going to prove that. they don't have a cause of death in this case. therefore, they should not, should not put her on the stand in the case in chief because the jury is just going to hate her worse and she's going to get convicted and probably get sentenced to death. they have to save her for the mitigation phase. >> wow. so it remains to be seen whether casey anthony will take the stand. you can catch our legal guys every saturday at noon eastern. tornado recovery centers in alabama will no longer be open seven days a week. from now on they'll be closed on sundays. fema says the number of people seeking disaster assistance at the end of the week dropped dramatically. more than 23,000 people have assisted those recovery centers since that devastating storm hit in the state in april causing widespread damage and dozens of deaths as well. the coast guard is closing a 182-mile stretch of the missouri river amid flood worries. that section runs from sioux city, iowa, to south of omaha, nebraska. thousands of people in north and south dakota are evacuating in advances of all this rising water. heavy rain on top of the snowmelt is causing all the flooding. further west, fire crews in arizona are battling two massive fires today. the largest is the wall low fire in the town of alpine. it's burned 140,000 acres and forced 2500 people to get out. arizona governor jan brewer is surveying the damage today. she's scheduled to hold a press conference next hour. let's talk more about all these wildfires with jacqui jeras in the cnn weather center. jacqui, is it just me or does it seem it's a bit early for this? >> not really. starting to get to the peak of that. conditions have been so dry for so long. that's really what's helping to fuel some of these fires. take a look at google ert. we put the heat signatures on there. this is by satellite detecting all this heat. these are the two burning in eastern parts of arizona. this is that wall low fire and there's another one south of i-10 that's also causing quite a bit of trouble. take a look at this. this will show you where we have read flag watches which are in effect. that's the dark red areas and we're expecting fire conditions to be extremely critical here over the next couple of days once again. our weather pattern is really allowing a lot of smoke to filter over into western parts of new mexico. there are air quality alerts into albuquerque as well as santa fay. you can smell the smoke from the fires so far away. the wind pattern not changing over the next couple days. an area of low pressure stuck over california. that's not going to move in and help clean out any of your air at all. the heat, that's the other big story here across the u.s. today, heat indices pushing 100 degrees in places like st. louis towards memphis. tomorrow we're talking above 100. it's going to feel like up to 105 for some of you. take it easy this weekend. stay in the ac if you can. hurricane season started this week, believe it or not. already have an area we're watching in the western caribbean that has a medium chance of developing into something in the next couple dals. it's not going to be moving a lot. we or worried about flooding in places like jamaica, haiti and the dominican republic. >> thanks, jacqui. look out below. it's the giant watermelon drop, an annual tradition at the university of california san diego. why you ask? it began in 1965 when a physics professor asked students to find out the speed of a falling watermelon and the size of the splatter. this year's splatter measured about 60 feet, a far cry from the one in 1974 which exceeded 167 feet. turning now to a much more serious subject, almost four million homes have been repossessed since the housing market started to collapse in 2008. we're going to take you to two u.s. cities that are trying to fight back. an ingredient that works more naturally with your colon than stimulant laxatives, for effective relief of constipation without cramps. thanks. [ professor ] good morning students. today, we're gonna... ♪ [ male announcer ] if you find yourself between a rock and a hard place, on second thought... ♪ she got an attitude ...you never will. the 2011 jeep wrangler. adventure is never ordinary. ♪ now sign and drive a jeep wrangler sport 4x4 with zero first month's payment, zero down and zero due at signing for qualified lessees. you see them in one neighborhood after another, abandoned homes. foreclosure notices on the door, on the window. it's heartbreaking. neighbors are worried about their property values because of this. reporter harry boomer with affiliate woio brings us the big picture from one big city. >> a few years ago we were averaging two foreclosures a day. >> reporter: at one point there were 10,000 homes foreclosed on in a year in cleveland. now down to about 8,000 a year. even now on cable street house after house boarded up. >> what we're seeing now is after foreclosures, we're seeing wholesalers come in and buy properties, sitting on them, not making any positive investment. >> reporter: the lot i'm standing on, a house once stood here. that house is boarded up. across the street, another empty lot, next to it another boarded up house and another. that is six houses on one street, 71st and ottawa in slav vic village. when people get tired of waiting, they start another con. >> we're seeing people going into foreclosure who are dumping properties to other unsuspecting dupes. >> reporter: trying to solve the problem, cleveland took part in a special hud housing program. >> we had the hud dollar program where we were finding property owners to take hud properties over. the issue we're facing is many weren't worth investing in. >> reporter: the foreclosure crisis is far from over. >> outside the city of cleveland, the foreclosure rate has increased and surpassed the city of cleveland. let's turn to washington now where the city is holding a foreclosure clinic. it's actually necessary in this day and ij. this is a place where people can find help in the dismal housing climate. cnn's mark preston is there. there's always a ton of people that show up at these events because they need help. >> reporter: yeah, there's no question about that, richelle. probably about 1,000 people here today looking for some help, looking for some advice, looking for some relief on how to save their homes or at least get out of their home very cleanly. as we just saw, where the housing market is hitting in middle america, it's hitting everywhere. over one million homes were foreclosed upon last year. it's really been driven by a stagnant economy. listen to what tim mass set had to say to me, an official at the u.s. department of trisry. >> it's been a significant factor. this housing crisis is driven, in part, by this unemployment we're facing. we're still coming out of a very, very tough recession. we had the worst financial crisis since the great depression. really, the underlying factors that drove that crisis were worse than the great depression. so while we prevented the panic and a depression, we still have a lot of work to do to repair the damage from that. that's what we're seeing in the housing market. >> reporter: that's what we're hearing from tim massad, assistant secretary at the u.s. treasury department. he was here today as well as lenders an community organizers all coming together to help the folks on the verge of losing their homes. >> let's hope they do get some help. it not only affects these families but a trickle-down effect as well. a president is injured when militants shell his palace. yemen's government says their president is fine, so why haven't we seen him since it happened? that's next. as many as 80 people may be dead in syria. take a look at hama, syria. witnesses say troops and policemen opened fire on protesters gathered to commemorate the children killed since this uprising began. we cannot independently verify the casualty count. the number comes from a human rights group citing medical sources in syria. let's move to yemen now. there are conflicting reports about the location of and the condition of the president ali abdullah saleh. rah late sa is here. what do we know. what has been verified? >> we know very little, richelle. we received information from the soud day government official that president saleh has gone to saudi arabia. he's arrived there for treatment. however, yemeni officials deny that. they say he's okay, sustained light injuries, possibly on his head. this is the conflicting information, complete confusion as to what the condition of the president is and where he is at this point. >> what do we know about the motivation behind the attacks, who did this? >> no one knows. what we know is president saleh himself pointed the finger at the leader of the most powerful tribe in his country. even today government forces attacked the tribal house of this leader, but he says that his tribe was not involved. so we do not know who is behind this. >> if, in fact -- because there are so many things we don't know, if, in fact, he were dead, what would that mean for the stability or instability of the region? >> if he had died, analysts say that even more chaos would have come to yemen which is already on the brink of full-blown civil war which is very dangerous for two reasons. one of them is in the southern part of the country you have one of the most dangerous affiliates of al qaeda which has targeted the united states with failed plots several times including the christmas underwear bomber you might remember. and a second reason is oil prices because yemen is -- sits on a very crucial shipping lane for oil. it borders saudi arabia. this is the biggest oil-producing region in the world, if you have instability there. and the most dangerous thing is that, if he's gone, there will be even more instability. let's listen to what a yemeni journalist had to say, his read on this attack and its consequences. >> i don't think the violence is going to stop any time soon. i do expect he's going to use his last option that he hasn't used and it's going to be air strikes in an effort to push them out. the violence definitely doesn't show any sign it's going to let up any time soon. >> indeed what we saw, richelle, right after the attack, we saw, as i mentioned, the attack on the compound of the tribal leader, ten people died. also, protests have continued. tens of thousands of people, opposition supporters who want president saleh to step down turned out in the streets again. so the instability continues, and this is a very serious escalation. >> and with this escalation being so serious, why has there not been any international intervention as there has been in libya? >> it's a very delicate situation. the country that is so driven by different factions, it has had several civil wars in the past. it was recently unified in 1990, a division between north and south yemen. it has shiite separatist movement, insurgency in the north. as i mentioned, al qaeda in the south is functioning. it's just have, have dangerous and difficult. there has been -- arab neighbors have come up with a plan for saleh to leave. three times he backs out of this agreement. this agreement has him handing overpower to his deputy, elections being held in 60 days, but he has balked at signing it three times. so it's unclear if he is now indeed in saudi arabia which we don't know, whether this plan has a chance or whether the tribal factions and all the other opposition factions in yemen will turn on each other. >> it will be interesting to see if we actually see him or lay eyes on him in the next few days. >> we only heard a statement on the radio. we have not seen him since that attack. >> rah late sa, thank you for explaining all this. we appreciate it. saving money by riding with strangers. it's called sluging. we'll explain the concept next. s for solar panels that harness the sun's energy... working on social activities like clean up programs on beaches in many locations... and regional replanting activities that will help make a better world for all of us. ♪ one team. one planet bridgestone. >> announcer: this past year alone there's been a 67% spike in companies embracing the cloud-- big clouds, small ones, public, private, even hybrid. your data and apps must move easily and securely to reach many clouds, not just one. that's why the network that connects, protects, and lets your data move fearlessly through the clouds means more than ever. . bill gates calls kahn academy the start of a revolution, an online site providing tutorials. steve perry shows us how it works in this week's "perry's principles." >> in a small silicone valley office, this man is using simt illustrations and lingo to explain math, science, history and even business concepts. >> if this does not blow your mind, then you have emotion. >> reporter: the 10 to 20-ming ut tutorials are free to anyone anywhere. >> the best way to get to the core of most issues, whether poverty, health care, whatever, is just making -- even democracy, making sure you have an educated population. >> dean uses it as a tool for home schooling his two children. >> what i like about it and what i think the kids like about it is you can work at your own pace, if they don't understand it, they can pause and rewind: if you're struggling with something in a you're strugglin something in a regular school, you don't get it, you take the test and get a c. you move on. >> richard is a fifth grade teacher in california. he uses courses to track their skunt. >> it allows them to know their students well, their strengths and weaknesses. >> it's backed by bill gates and google. >> you know, if they had a new floor profit, it would live up to it. maybe we'll continue to use this. everyone is tired of those high gas prices, right? some commuters are saving money by slugging. some of you have no idea what i'm talking about. sandra shows you. >> reporter: long lines to hop in a car with strangers. with gas prices -- >> ridiculous. >> outrageous. >> disappointing. >> reporter: more people are resorting to blind carpooling called slugging. a way commuters from northern virginia going to washington catch a free ride with drivers looking to beat the rush. >> these are slugs? >> all slugs waiting to hop in cars. >> reporter: it started more than 30 years ago, but david leblanc's website helped organize this pseudo secret society, listing where passengers can line up for a ride. for the drivers, the gas price is so high, it's not benefitting them or saving them money to pick up slugs. >> correct, it's not saving them money, but it is saving them time. it probably saves me at least 20 to 30 minutes each way on the community. >> reporter: that's because virginia law requires drivers to have at li three people in a lane to go into the passenger lane. >> as gas prices have increased, those who may not have considered slugging now have an action. >> he picks up a passenger hitching a ride from virginia to washington. >> why did you decide to go? >> it's inexpensive. it gets me where i go, and gas is really expensive. >> reporter: otherwise, what options do you have? >> i have to drive, catch a bus, or the omnibus. >> and how much would that cost? >> about $$70 to fill up the tank, or $14 on the bus for the whoem day. >> the practice is catching on in other congested cities like dallas and san francisco. a commuting partnership to save time and money. this is a free ride. >> i know. can't beat it. >> sandra endo. cnn, washington. so would you do it now that you know what it is? you're riding with strangers. okay, if you do it, there is an etiquette that comes with slugging. you have the rheums. first come fist serve. slugs do not go out of line. do not talk on your cell phone. that could be a rule for a lot of places. this is going to sound like a first date rule, don't discuss politics, religion, or sex. and no smoking or eating by the slug. and do not leave a woman standing alone in line. call it chivalry, thoughtfulness. it's just about safety, right? now you know what it is so slug safely. a thief snatches a guy's laptop, but this is a smart little computer. wait until you she how a mac back safed itself. 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[ male announcer ] ask your doctor about cymbalta. imagine you, with less pain. cymbalta can help. go to cymbalta.com to learn about a free trial offer. crime story. high-tech story, and a happy ending. dan reports on how a california man got a stolen computer back with the help of a smart piece of software and his online friends. >> reporter: a bugler hansacked his apartment and took his laptop, but he knew something the thief didn't. he installed an application called hidden. it pinpoints the computer's location and snaps photos. >> when you saw the first image pop up, what did you think 1234. >> i was amazed and impressed it was working. i never tested it out. it worked. the app began streaming images of the man who stole his laptop. he could view them by logging onto his app account on any computer. >> i was thinking, this sucks and somebody has my computer and is messing with my stuff and there's nothing i can do about it. >> reporter: one moment, he's in the car, in bed, or sleeping in front of the tv on the couch. he presented the data to an oakland detective, but in a high-crime city like oakland, stolen laptops are not a priority. >> he said, i hate to be the one to tell you this, buwe don't have the resources to deal with this right