The sports car look of the cabin is almost entirely achieved by the seats, but that feel is so reinforced by the firmer ride, the rasp of the exhaust and the quick reflexes of the engine and suspension that you can't help but think you're really in a posh rocket sled.

FORBES: Vehicles Feature

He suffered broken bones and detached retinas, but out of these wild rides - by December 1954, Stapp had volunteered for 29 rocket sled deceleration and windblast experiments - came improved helmets, arm and leg restraints, better aircraft seats, stronger safety harnesses and techniques for positioning the body to help absorb powerful forces.

BBC: Before Baumgartner: Five daredevils who helped science