car crash testing http://www.consumerreports.org/cro/cars/safety-recalls/carcrashtest/crashtestvideo.htm
to be honest, i expect to die in a serious car accident, which is why i drive more carefully and slower. you're driving a 2 tonne box of metal and flammable liquid and 40 mph - missiles are less dangerous! once again, it's human arrogance - they get too comfortable and feel 'safe' so they get complacent...