When it was launched, it seemed little more than a pipe dream. Billionaire inventor Elon Musk unveiled a futuristic plan for a new type of transport that would shoot capsules of passengers along a tube at around the speed of sound. Elon Musk, one of the brains behind the online payment system PayPal, and SpaceX claims his solar-powered 'Hyperloop' could herald a revolution in travel. The Hyperloop Transportation Technologies design for Elon Musk's Hyperloop. It hopes to produce a technical feasibility study finished in mid-2015. The team believes the system could link the majority of America's major cities together. Scroll down for video
@highlight
Musk is working with UCLA researchers to develop system
@highlight
Over 100 engineers have created crowdsourced firm to work on idea
@highlight
Hoped the system could be rolled out in cities around the world
projects, for example his rocket building company @placeholder, to consider