According to the Los Angeles Times there have been at least five fatal crashes involving "runaway Toyota and Lexus vehicles made by Toyota Motor Corp" resulting from "hundreds of incidents of sudden acceleration involving the company's vehicles". Toyota blames accelerator pedals jammed open by adrift floor mats. Some experts think the problem has more to do with possible faults in the cars' sophisticated technical systems. Read more here.
Jeremy Clarkson, sensing that the Toyota he's road testing has picked up on his negativity and might try to kill him HAL 9000 style, takes preemptive action. That's one Prius that's never going to hurt anyone.