. >> reporter: omar ahmed is the director here. inside a chevy malibu.the control room, researchers simulate my virtual road and monitor my every move. >> we can see the speed your vehicle. we have cameras pointed at your eyes and track your movement. >> reporter: before i take the sleeping pill, i'm a pretty good driver. and i pass the sobriety test with perfect coordination. then the pill is designed to work quickly, very quickly. there's a clear warning with ambien, in fact, all sleeping pills for at least seven to eight hours. do not drive until you feel fully awake. but we know that doesn't always happen. and it's not just sleep driving. some impaired drivers report taking the medication just 15 minutes before being pulled over. others, including kerry kennedy, say they may have popped a pill by mistake before hitting the road. >> we're going to wake her up and ask her to do her first drive. lisa. >> reporter: it's just 30 minutes after i've taken the pill. i start swerving immediately. >> lisa's now driving in the passing lane. this is very dangero