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7 billionaires and their crazy-ingenious ideas

By: Bryan Nelson on Sept. 25, 2013, 11 a.m.
Hyperloop concept, Elon Musk

Photo:; OnInnovation/Flickr (inset)

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Elon Musk's Hyperloop

Elon Musk, HyperloopElon Musk is a man known for being unafraid to put his money behind his big ideas. He already has staked a great deal of his fortune on the visionary space transport company, SpaceX. He also founded Tesla Motors, an electric car company.

His next big idea sounds like something straight out of a futuristic sci-fi flick: "hyperloop." Musk bills it as the world's upcoming "fifth mode of transportation" (after planes, trains, automobiles and boats). It works by propelling passenger pods through low-pressure tubes. Since the pods would ride on a cushion of air rather then wheels or rails, they would reach incredible speeds. Initial models project at speeds of about 760 mph!

If implemented, the hyperloop would certainly revolutionize travel.