What are your thoughts regarding a celebrity signing your car? Does it add to the value, or who cares?
If the car has a story with the person it may make it worth more. Like Petty signing a car he actually raced adds authenticity.
But Burt Reynolds signing every black and gold trans am put in front of him adds no value in my opinion. I like Burt's movies and I like Trans Am's from that era but Burt signing a car he never drove is just a signature.
By the way,
How well is that panel van with Bill Cosby's signature selling right now?