Hyperloop One is a company in Los Angeles, California, that is leading the effort to commercialize the Hyperloop for moving passengers and/or cargo at airline speeds at a fraction of the cost of air travel. The concept of Hyperloop transportation was introduced and named by Elon Musk in August 2013, although he is not involved with Hyperloop One. The Hyperloop uses a linear electric motor to accelerate and decelerate an electromagnetically levitated pod through a low-pressure tube. The vehicle will glide silently for miles at speeds of up to 1,000 km/h (620 mph) with no turbulence. The system is designed to be entirely autonomous, quiet and on-demand (departures every 10–20 seconds) and, as it is built on columns or tunneled underground, eliminates the dangers of at-grade crossings and requires much smaller rights of way than high-speed rail or a highway. Hyperloop One has made substantive technical changes to Musk's initial proposal.