China Aerospace Science and Industry Corporation has plans to start working on a high-speed flying planetrain that would reach speeds of 4,000 km or 2,500 miles per hour, three times the speed of sound! It will use magnetic levitation in a vacuum tube system. Obviously an offshoot of Elon Musk's Hyperloop, the ambitious Chinese system will have three different speeds and distance stages; planetrains that can run up to 620 mph among Chinese regional cities, 1,250 mph among large megalopolises and 2,500 mph travel between different countries along the Chinese global initiative, Silk Road Economic Belt '21st Maritime Silk Road' or BRI.