Dr. John Paul Stapp - "The Fastest Man Alive"

Dr. John Paul Stapp (July 11, 1910 –  November 13, 1999) earned the title "The Fastest Man Alive" when he rode the Sonic Wind I rocket-propelled sled on December 10, 1954 to a land record speed of 632 mph in five seconds. He sustained the greatest G-forces endured by man in recorded deceleration tests up to that time, 46.2 Gs, when the sled stopped in 1.4 seconds.