we went for a ride with professor raj kumara at carnegie melon university. where the technology was created over 30 years age for all the people telling us we are going to be driving, driverless car tomorrow, you say? the magic all happens in here. >> reporter: right. keep waiting. because despite all the technology and decades of research, the driverless car has a long way to go. >> the biggest nightmare that people like me who work on the car is that somebody deploys this technology prematurely and it causes an accident and some child dies. >> reporter: as disturbing as unlikely, a scenario on the mind of researchers and slowing momentum of autonomous vehicles. >> we as human beings are much less tolerant of an error a machine makes. >> gill pratt heads the research institute. global initiative from the manufacture the driverless car. >> how do you program decisions into the driverless car? >> what you are really talking is called planning. planning for near infinite number of ethical scenarios like this. suppose your car is approaching a head-on collision

bower is a security expert at carnegie melon. he said creating passwords is so important because hackers have computer programs to guess it over and over. it is important to have passwords that contain upper and lower case letters and numbers. just don't put the capital letter in the front and numbers at the end. mix it up. >> use a password manager. >> reporter: there are a number of password managers on the market that can remember your passwords for you. >> most have a feature which let's you generate a new password for another account. >> reporter: if you use the one right guess can allow a hacker to get into all of them. hannah daniels cbs new york. >>> a violent spring storm continues to batter parts of the u.s. hail and thunderstorms battered through northern texas last night. the powerful system produced torrential hailstorms as hailstones the size of golf balls pounded thousands of homes. rain and wind topping 90 miles per hour knocked out power to thousands of people. the same system is bringing heavy snowfall from the

we went for a ride with professor raj kumara at carnegie melon university. where the technology was created over 30 years age for all the people telling us we are going to be driving, driverless car tomorrow, you say? >> just wait. the magic all happens in here. >> reporter: right. keep waiting. because despite all the technology and decades of research, the driverless car has a long way to go. >> the biggest nightmare that car is that somebody deploys this technology prematurely and it causes an accident and some child dies. >> reporter: as disturbing as unlikely, a scenario on the mind of researchers and slowing momentum of autonomous vehicles. >> we as human beings are much less tolerant of an error a machine makes. >> gill pratt heads the research institute. global initiative from the manufacture the driverless car. >> how do you program decisions into the driverless car? >> what you are really talking about in artificial intelligence is called planning. planning for near infinite number of ethical scenarios like this. suppose your car is approaching a h

. >> reporter: doctor bauer is a computer security expert at carnegie melon university sign lab, he saysreating strong pass word is vital because hackers have software that uses billions of pass word combination it is break into an account. >> it is computer trying to get it. they will use dictionary of pet names and human names and city names and they will try all possible combinations and they can try many, many guesses. >> reporter: bauer says it is perfect to have pass word that contain upper, letter case letters and numbers but just don't put capitol letter in the front and numbers at the end. mix it up. >> one tool, that people can use is a pass word manager. >> reporter: there are a number of pass war managers on the market that can remember your pass word, for you. >> most of them have a feature which, and, pass word for every account. >> reporter: because if you use the same pass word for all of your accounts, one right guess can allow a hack tore get into all of them. hena daniels for cbs news, new york. >>> coming up, for "eyewitness news", new developments in the brussels ter

. >> back on the road oot carnegie melon, our driverless car takes a detour. >> decided to take over.tem has been sitting quite some time. >> professor raj kumar takes the wheel. evidence of the autonomous vehicle has miles to go. that's the "cbs overnight news." for some the news continues. for others check back with morning news. anddds. >>> it's tuesday, march 1st, 2016. this is the "cbs morning news". >> super tuesday. a cross roads in the path to the white house. millions of americans will vote today and determine the future of the presidential race. >> he thought that i was doing it for publicity and attention, and that ripped me apart. >> tearful testimony from erin andrews. the sportscaster tries to win a $75 million lawsuit over a nude video secretly s

. >> back on the road oot carnegie melon, our driverless car takes a detour. >> decided to take over. has been sitting quite some time. >> professor raj kumar takes the wheel. evidence of the autonomous vehicle has miles to go. that's the "cbs overnight news." for some n morning news. and kcbs this morning. from the broadcast center in new york city. i'm demarco moore. >>> on the eve of super tuesday, trump clashes with black lives matters protesters. >>get them out. get them out. out. out. out. out. >> also tonight, a cop is gunned down on her first day on the job. the big cheese at a food company pleads guilty to selling parmesan that had no parmesan. >>> and david martin with an american hero. >> that's five bronze stars, two purple hearts. >> that's correct. >> and now the highest military honor of all. >> announcer: this is the "cbs overnight news." >>> no candidate will clinch the nomination today, but super tuesday may generate irreversible momentum for hillary clinton and donald trump. they're favored in most of the 12 state primaries and caucuses. for democrats, a step toward