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Inside graveyard of Soviet train with jet engine that could hit 220mph
SOVIET engineers’ visions of a futuristic turbo train which could hit lightening speeds now sits rotting in a factory yard. The 50 ton jet-powered train could reportedly hit speeds of around …

And it's thought - with the right track beneath it - the 28 metre train car could have exceeded 220mph
The American M-497 Black Beetle was built in 1966 - hitting speeds of 184mph.