Russia’s incredible 1970 jet-powered turbojet train - built to travel over 250km/h - has been found rusting outside a railcar factory englishrussia.com/2014/05/26/aba…
This wasn't the Space Race, this was the RailJet race - 4 yrs before the USSR. The New York Central Railroad's M-497 "Black Beetle" of 1966 used ex-bomber plane engines did 183mph. BUT. Think of bridges. And ballast stones...