I'm not sure you can sell your "right to buy". How do you think that that will work? Right now you have a purchase agreement with Tesla that says you'll buy that car if, for whatever reason, you back out of that agreement Tesla can reassign the car to someone else and decide to refund your deposit or not. I do not think you can reassign or transfer your MVPA either.
At best you would probably have to to arrange with a buyer to be co listed with you on the title and then you would transfer everything over to them. Either way, it sounds like a lot of hoops for someone to jump through for something that may or may not even be able to happen.