Someone should build an insurance company for Teslas. Build it as a Tesla app connected to the log data. No need for creepy trackers, they're already built in ;)
All things being equal, they're probably one of the best groups of people to hand this power to, but I would take an open source EV over a Tesla. Some (most?) other car companies track their new cars too (eg Jeeps broadcast GPS coordinates [0]).
[0] https://medium.com/backchannel/how-elon-musk-and-y-combinato...
[1] http://www.wired.com/2015/07/hackers-remotely-kill-jeep-high...
Google (location awareness) and T-Mobile (cellular provider) already know my locations at all times, I'm fine with Tesla collecting that data in return for software updates, Autopilot refinements, and for the vehicle returning data to them to enhance their own Autopilot algorithms.