FILE PHOTO: The company logo of ride hailing company Didi Chuxing is seen on a car door at the IEEV New Energy Vehicles Exhibition in Beijing, China October 18, 2018.  REUTERS/Thomas Peter/File Photo
The logo of Didi Chuxing is seen on a car door. The company is one of China's largest ride-hailing players. Reuters

China's Didi Chuxing rolls out an autonomous driving unit