I picked up my 2018 Tesla Model S from Owings Mills, MD. I bought it with premium upgrades and upgraded seats. It came with standard autopilot which is just autosteer. After looking the glove compartment, the original window sticker showed both enhanced autopilot and full self driving capability. Both of these features were already paid for by the previous owner. Can Tesla remove these upgrades if a new owner takes possession of a used car from Tesla? I've read stories that Tesla took away and gave back these upgrades from a owner who bought a Tesla from a third party seller and auction.