Oh the places you'll go and the stories your can can tell about htem

The main problem with the current state of in-car, location-based services is that they aren't required to notify consumers. It's possible that some motorists are completely unaware of who uses their location data, and how. Also, for four out of the six automakers, customers do not have the option to request that their historical data be erased. (The "right to be forgotten" is included in the EU’s data protection laws and recommended by the GAO.) Read more in 

In-Car Tracking: We Know Where You've Been