US-based entrepreneur Elon Musk has revealed details of a supersonic "Hyperloop" transportation system linking Los Angeles and San Francisco. The SpaceX, Tesla and Paypal founder envisions using magnets to shoot capsules supported by a cushion of air through a miles-long low-pressure tube. via Pocket http://www.bbc.co.uk/news/world-us-canada-23677205#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa
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