This is great. When you buy the car, you own it. I don’t care what kind of weird licenses and contracts they put together. If I buy the car and there is hardware in the car that allows for heated seats, there is no reason why I shouldn’t be able to enable it myself, tear it out, or do whatever I want with it. It is mine.
I can understand there being safety concerns for modifying a car. But the owner of the car already accepts liability for the operation of that car. If I do not modify the car and I get into an accident due to Teslas auto pilot feature or another thing baked into their system, does Tesla accept liability? No, they do not.
If it is my responsibility for the safe operation of the vehicle, then it is also my responsibility to modify a vehicle in a safe manner. 
This is great. When you buy the car, you own it. I don’t care what kind of weird licenses and contracts they put together. If I buy the car and there is hardware in the car that allows for heated seats, there is no reason why I shouldn’t be able to enable it myself, tear it out, or do whatever I want with it. It is mine.
I can understand there being safety concerns for modifying a car. But the owner of the car already accepts liability for the operation of that car. If I do not modify the car and I get into an accident due to Teslas auto pilot feature or another thing baked into their system, does Tesla accept liability? No, they do not. If it is my responsibility for the safe operation of the vehicle, then it is also my responsibility to modify a vehicle in a safe manner.