Foreign automakers like VW and Toyota have been producing cars with joint venture companies in China for decades yet they still keep the core technologies to th

Foreign automakers like VW and Toyota have been producing cars with joint venture companies in China for decades yet they still keep the core technologies to themselves. Their Chinese partners still struggle to make anything remotely close. For more than a decade the joint venture model has been seen as a failure for the Chinese auto industry. So perhaps Tesla wouldn't worry that much about losing their tech.