Hyperloop

On bbc news 24 just now :

The Hyperloop is a conceptual high-speed transportation system put forward by entrepreneur Elon Musk,[1][2] incorporating reduced-pressure tubes in which pressurized capsules ride on an air cushion driven by linear induction motors and air compressors.[3] As of 2015, designs for test tracks and capsules are being developed, with construction of a full-scale prototype scheduled for 2016.[4]

A preliminary design document was made public in August 2013, which included a suggested route running from the Los Angeles region to the San Francisco Bay Area, paralleling the Interstate 5 corridor for most of its length. Preliminary analysis indicated that such a route might obtain an expected journey time of 35 minutes, meaning that passengers would traverse the 354-mile (570 km) route at an average speed of around 598 mph (962 km/h), with a top speed of 760 mph (1,220 km/h). Cost estimates were US$6 billion for a passenger-only version, and US$7.5 billion for a version transporting passengers and vehicles.[2].

http://www.bbc.co.uk/programmes/b06ymwrl
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https://en.wikipedia.org/wiki/Hyperloop