The entire automotive industry sees automobiles as upgradeable, it's called the "aftermarket". Conventional automobiles can be tuned and upgraded and have been

The entire automotive industry sees automobiles as upgradeable, it's called the "aftermarket". Conventional automobiles can be tuned and upgraded and have been for generations, except, us non Tesla owners can do it without the manufacturers say so. With Tesla you are forced to buy your upgrades from them, this is less flexible IMO.