I can think of a reason why an authoritarian autocracy wants to flood the world market with cheap subsidized cars. A car weighs tons, costs a lot of money, has an excuse why it wants cameras and microphones everywhere and regularly communicates home for "updates" or for "syncing app store/entertainment/maps".

Winnie Pooh only needs two or three cars to stop working for an entire road to congest. Only a few dozen roads to congest to chaos a city. Only a few hundred cameras and microphones to find out a lot. Only one car to have a "bug" to kill a specific person. Only one update to deprecate millions of cars to customers for new 30k items each.