Hundreds of electric vehicle manufacturers are providing location data to the Chinese government, sparking privacy concerns among some car owners in the world's largest automobile market. When Shan Junhua bought his white Tesla Model X, he knew it was a fast, beautiful car. What he didn't know is that Tesla constantly sends information about the precise location of his car to the Chinese government. Tesla is not alone. China has called upon all electric vehicle manufacturers in China to make the same kind of reports -- potentially adding to the rich kit of surveillance tools available to the Chinese government as President Xi Jinping steps up the use of technology to track Chinese citizens.