I am going to try it on my son's car this summer. If you continue reading the thread, they found that a self leveling boat enamel called Brightside, IIRC, does a little better job than the Rustoleum. However it is about 10Xs more expensive per gallon. Supposed to smooth right out when rolled on if cut correctly with pure mineral spirits, as opposed to paint thinner. Even on vertical surfaces... like the side of a boat. It IS marine paint afterall. Dave