World's first smart rapid rail bus started its test run in central China city of Zhuzhou on Monday. Domestically developed, the bus is equipped with sensors that can read the dimensions of roads and plan its virtual rail to run. The three- carriage bus can carry up to 307 passengers and run at a maximum speed of 70 kilometers per hour. Fueled by new energy, the bus can run 25 kilometers after 10 minutes of charging.