China has completed a superconducting test run for its ultra high-speed train that aims for speeds of up to 1,000km/h (621mph) in a low-vacuum tube. If successful, it will become the fastest means of on-ground transport. The “T-Flight” will someday carry passengers and cargo between mega cities in China. The team had previously tested at speeds of 623km/h (387mph), under non-vacuum conditions.