On the day he died, Mark Saylor was doing what he did for a living: driving on a California highway. Only he wasn’t driving his state-issued highway patrol car that day in late August 2009. Nor was he driving his own Lexus 250, which was at the dealer for servicing. He was driving a loaner with his wife, daughter, and brother-in-law on a leisurely family outing northeast of San Diego—until suddenly the car inexplicably took off. And no amount of braking could slow it down. As Saylor frantically tried to gain control, his brother-in-law called 911. "Our accelerator is stuck!" he told the dispatcher. "We’re going 120!"

It wasn’t just the speed that made this so dangerous. He read the sign they were passing: "End freeway one-half mile." The car was barreling toward a T-shaped intersection. When it got there, it hit another car, flew through a fence, rolled into a field, and burst into flames. The last word before the screams was, "Pray!"