Have you ever seen some video footage of a frontal 70 mph car against car crash? No? That's because there is none. Car manufacturers and insurance corporations "forbid" such tests to be made public because there is no device , steel cage or what so ever that will really protect you or some major parts of you from getting transformed into mush.While I know I can die in a car, I still have myself buckled in, wrapped in a steal cage that is filled with air bags and other devices. Not that someone dying is the reason I wont want rampage, because I will watch, and if someone dies I can accept that. But, that's not the best comparison really.
A very good friend of mine is doing numerical sims of car crashes. Sometimes they do crash in reality. Mind bending...