GM currently tracks 100+ variables of your car over the life of usage (thanks on star!) and then calculates a resale price and offers to buy it back or gives you a certain deal when trading in.

Ford does something similar but is easily defeated by changing the stereo. The APIM tracks your driving habits locations and ecu vars which is captured and uploaded to Ford when you take the car in for service (don’t know how this works in their newer 2019+ cars since they are also connected 24/7 like GM)