Tesla's a funny example to pick; if they detect that you've tampered with it, the company doesn't stop at "not having anything to do with you" - they actively kneecap your car. Not for liability reasons, but because it undermines their ability to market segment. You don't really "own" a Tesla the way you own most other cars.

https://electrek.co/2020/08/22/tesla-fights-back-against-own...