Tech guru Elon Musk gears up to unveil the fifth form of transport August 11, 2013 THE MAN behind Paypal and Tesla Motors is today due to publish designs for the world’s fastest rail service, named Hyperloop. Elon Musk has until now kept enthusiasts guessing about the details of his “fifth form of transport,” which could one day offer supersonic inter-city travel. The billionaire entrepreneur said in May that the idea [...]