
High-speed transportation of the future? —
A video by a Colorado firm demonstrates a futuristic transportation system that would whisk passengers through vacuum tubes at speeds of up to 4,000 miles an hour. Entrepreneur Elon Musk, a pioneer in both electric cars and private spaceflight, has expressed interest in the idea.

High-speed transportation of the future? —
Under this proposal by transportation firm ET3, each passenger capsule would hold 4 to 6 people, plus their luggage.

High-speed transportation of the future? —
The capsules would then be loaded, sort of like bullets or those containers used at drive-through banks, into long vacuum tubes for their journey.

High-speed transportation of the future? —
The airless tubes — mounted above ground or even under water — would be combined with a magnetic-levitation system used on conventional bullet trains. Linear electric motors accelerate the capsules, which then coast at insanely high speeds without friction or wind resistance.

High-speed transportation of the future? —
ET3 claims such a vacuum-tube system could be built for one-tenth the cost of high-speed rail, or one-fourth the cost of a freeway.

High-speed transportation of the future? —
As crazy as it sounds, if moving at their projected speeds the capsules could travel from New York to Southern California -- a journey of some 3,000 miles -- in about 45 minutes. Musk says he will publish an alpha, or early design, of the prototype system next month.


