We've wondered how safe freeway guard rails really were and how they test them to ensure our safety when people fall asleep at the wheel. This is that test gone horribly wrong. Runaway bus ahead.

The runaway bus spectacularly hops the guard rail without much loss in speed, then barrels into a group of cars and a flatbed truck with photographers who seemed to be oblivious to what 12-ton beast was coming their way. We're hoping that no one was seriously injured, but from the looks of the impact and subsequent scrambling we think it might have been an unfortunate possibility.