(FILES) This file photo taken on September 20, 2016 shows Chairman of Hyperloop Transportation Technologies Inc Bibop Gresta posing in front of a rendering of the Hyperloop technology at Innotrans, the railway industrys largest trade fair, in Berlin on September 20, 2016. It may sound like the stuff of science fiction, but developers insist their dream of passengers seated in pods shooting through a tube above the ground will become a reality by 2020 -- and change travel as we know it. / AFP PHOTO / John MACDOUGALLJOHN MACDOUGALL/AFP/Getty Images
