603 kilometres per hourThe highest-recorded maglev speed is 603 kilometres per hour (375 mph), achieved in Japan by JR Central's L0 superconducting maglev on 21 April 2015, 28 kilometres per hour (17 mph) faster than the conventional TGV wheel-rail speed record.
Is Hyperloop still alive?
There is no Hyperloop service in the U.S. today. First mentioned by Musk to a reporter in 2012, the Hyperloop is a high-speed electric vehicle that carries passengers and travels in a low-pressure environment such as a vacuum tube without touching the walls.