Hyperloop is a proposed new mode of transportation that would propel passenger or freight-carrying capsules through a near-vacuum tube at over 700 miles per hour. The system would consist of tubes supported by pylons, within which capsules would travel suspended on air bearings and accelerated by linear induction motors. Capsules would contain their own compressors and air bearings. The tubes would be made of steel and solar panels along the tubes would provide power. Hyperloop aims to provide faster, safer, cheaper, and more sustainable travel than existing surface transportation like roads, rail, and air. Several companies are currently developing Hyperloop systems, with some projects underway to construct routes between cities like San Francisco to Los Angeles