OK... I have searched and couldn't find a good answer so hear goes. I have a 49 pontiac that had sat in a barn since the mid 60s. The car was factory light blue but that faded away a long time ago. It looks like someone used rattle can flat white paint back in the 80s to cover surface rust. With patina an accepted practice now, I'd like to see if I could get the spray paint off but not remove most of the factory paint underneath. I've used green scotch pads and they remove the light areas, but a lot of the car has a health coat of spray paint on it. Is there an easier way to do this? Acetone? Comet? Surely I'm not the only one that has a car that has been ruined by a rattle can. Any advise on best practices would be GREATLY appreciated!!