the US was all for gung-ho experimentation in those days. Who now remembers Chuck Yeager, and my childhood hero, John Stapp? http://www.patricksaviation.com/videos/zimolaviation/5163/ 632mph in a rocket-propelled popemobile, racking up 45gs the entire run in less than a mile!Assuming his suit saves him from the friction generated by slowing to 120mph of course.
He is setting off from only 3 miles higher than the guy in the 60s though and all he suffered was a numb hand. Surely we have learnt enough in 40 odd years? Otherwise we'll have a big hole in the ground shaped like an Austrian.