Mustard

The Problem With Fast Trains: What Happened to Hovertrains? (2018x4)

:

In 1974, a French train sets a speed record, exceeding 250 miles per hour. But this train is unlike any other before it. Instead of rolling on train wheels, it hovers on a cushion of air. In the 1970’s hovertrains were seriously being considered the solution to slow, antiquated railways, which increasingly had to compete with new superhighways and even intercity air travel.