China's latest bullet trains will reach a blazing 400 km/h, faster than the Hyperloop One

China has officially reclaimed the title for world's fastest train.

Come September 21, new bullet trains will be blazing their way across China at speeds of up to 400 km/h (248 mph). 

Consider this China's comeback, after a two-train collision in 2011 that killed 40 people. The top speed at the time was 350 km/h, but authorities throttled them to 300 km/h after the fatal accident.

The new trains will be returning to the 350 km/h speed, but according to state news outlet Xinhua, they're capable of going even faster, at a maximum speed of 400 km/h. Read more...