With no less than 54 driven wheels, a length of 570 feet, and a total output of almost 5,000 horsepower, these are just some of the highlights that make up the massively impressive LeTourneau Overland Train Mark II, the longest off-road vehicle ever made.

So stick around until the end of this video to find out the story behind this huge US Military machine, including its Cold War, nuclear-showdown roots, and its equally-impressive predecessors.

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