What Do You Call A Train,

that does not run on rails?

I really do not know, but in in Zhuzhou, Hunan province, the 30-meter train has three carriages and is developed by CRRC Zhuzhou Locomotive Co Ltd, the train can move at a speed of 70 km/h and can carry up to 500 passengers, the company calls it an ART, Autonomous Rail Rapid Transit, so I guess it will be called ART, trains without rails, whatever next, cars without drivers?