Hyperloop is a proposed mode of passenger and freight transportation that would propel a pod-like vehicle through a reduced-pressure tube that would exceed airliner speed created by Elon Musk in 2012. The alpha version of the proposal, published on the SpaceX website, describes design claims of the system, as well as its function. The pods would accelerate to cruising speed gradually using a linear electric motor and glide above their track using passive magnetic levitation or air bearings. The tubes could also go above ground on columns or underground, eliminating the dangers of grade crossings. It is hoped that the system will be highly energy-efficient, quiet and autonomous.
The main difference between Hyperloop and high-speed rail is that it is much faster, capable of travelling at 750 mph. It is also more environmentally friendly with no direct emissions or noise. It is currently in development by Hyperloop One, a company started by Shervin Pishevar. They have raised more than $150 million and have announced seven projects, which includes a feasibility study with the Dubai Road and Transport Authority.
Hyperloop One in May 2016 launched a separate initiative, the Global Challenge Competition, to invite cities companies, governments and universities to make proposals for Hyperloop in their regions. Shanghai Hyperloop, a division of NYU Hyperloop, is one of thirty-five remaining teams, selected from an initial pool of 2,600 teams.