congress her runaway toyota lexus didn't have a stuck gas pedal or stuck floormat. it just took off. >> i put the car into all available gears, including neutral, but then i put it in reverse and i placed both feet on the brake, and i was going to have to put the car into the upcoming guardrail in order to prevent killing anyone else. >> this noisy, electronics lab at the university of maryland's clark school of engineering is where professor mark peck specializes in laboratory testing. he believes toyota still doesn't know what's causing the problems. most likely it's electronics. and that, he says, is a worst-case scenario for a car company losing sales. >> i think that the evidence is pointing that way. i think the evidence is point that go way, absolutely. >> so any fix? >> it's not a fix. so they're in a little bit of a