Hyper loop offers a potential revolution in transport by enabling aircraft speeds at ground level in a point-to-point transport system. It refers to Elon Musk's concept of passenger or freight vehicles operating inside low-pressure tubes, which could enable very high speeds of up to 760 mph. Several companies are working to develop and build hyper loop systems, with the goals of creating a safer, faster, cheaper, and more sustainable alternative to high-speed rail and other modes of transport over medium distances. The first hyper loop routes may begin operations in the early 2020s.