Tesla is rolling out self-driving features to some cars in China, similar to the Full Self-Driving (FSD) system in the US.The new features allow Tesla owners in China to use driver-assist features on controlled-access and city roads.BYD, Tesla's biggest rival in China, announced equipping nearly all its models with advanced self-driving tech at no extra cost.Other Chinese brands are also seeing higher sales of their affordable electric and hybrid vehicles outside of China.