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Billionaire unveils plans for supersonic tube travel

A billionaire inventor has unveiled plans to create a crash-proof supersonic transport system that will fire passengers through a tube at speeds of up to 700 mph.

American entrepreneur Elon Musk visualises pods of up to 28 people rocketing through a solar-powered network across vast distances.

He claims the 'Hyperloop' system could get travellers from Los Angeles to San Francisco, some 350 miles away, in just 30 minutes.

ITV News Washington Correspondent Robert Moore explains how the technology works and why a retro cartoon may have helped pave the way for the future travel: