If the gag works for Chuck Jones and the Roadrunner, it’ll work for Mike Lah and Droopy, right?
In Mutts About Racing (1958), Spike tries getting the edge on Droopy in a car race by painting a tunnel against the side of a mountain. You know the gag. The difference is, other than you can barely see what’s happening thanks to the huge CinemaScope screen, is that Spike’s car breaks up into little pieces, then Spike does the same. The cracking-up-into-pieces bit is an old Tex Avery gag; in fact, Avery used the paint gag in one of his Droopy/Spike competitions.