The factory reset in the car was easy / fine. Map thinks you’re in SFO until you go for a short drive. You can delete Bluetooth etc before hand (I did) but I don’t think it’s necessary TBH. Removing the car from your account: the link/process within the portal didn’t work for me. I had to email AccountSupportEMEA/AT/tesla.com the auto reply I got: 3 days later car was removed.