I always ask the dealership not to add their decal or logo to my car. It is done at the dealership when a car is sold since they sometimes trade cars amongst dealerships.
They invariably chuckle when I ask, but when I insist they write it in the contract, with a clause that the contract will be null and void if the decal or logo appears anywhere on or in my car, they get all serious. Several have tried to impress the fact on me that they would make sure the decal was not put on, that it really didn't need to be written down, but I'm adamant - no decal cancellation clause, no sale!
One dealership put the decal on anyway, and snarky-smiled at me, saying "Oh well, we're sorry, it's glued on now. We can't very well remove it." I promptly walked into the office to cancel the purchase based on the conditions stipulated in our contract; you never saw a decal being removed so quickly.
Car dealerships are everywhere, I don't need to be snarked at.
