Are you saying that they modified this so that I can not just "remove" the car when I sell it but I can also state who I sold it so that they also simultaneously receive access to the car on their account?
Did you even read what I posted above? That is exactly what the Tesla documentation says: Tesla Account Support
Can I remove or transfer a car from my Tesla Account?
Yes. You can either transfer the car directly to the new buyer’s Tesla Account or just remove it from yours – all from inside your Tesla Account. We recommend doing this after you’ve handed off your car. The transfer process cannot be undone once completed.
Follow these steps to remove or transfer ownership of your Tesla:
Note: If you transferred directly to the new owner, they will also receive an email confirmation. If no Tesla Account is associated with their email address, they’ll receive a second email to complete their account set-up.
- Log into your Tesla Account
- Select ‘Manage’ next to the car you’d like to transfer or remove
- Scroll down and select ‘Remove Car’
- Submit the new buyer’s information or select ‘Skip this Step’ if you’re unsure
- Open the email confirmation sent to your inbox and confirm the final transfer