The abandoned gas station was the used to store the stolen cars of Pistons McGee.
Scooby-Doo and Scrappy-Doo (second series)
Pistons McGee brought stolen cars he shrunk to the gas station where he finds the gang in the Mystery Machine. They were forced to bail out before he could step on them taking shelter in a mousehole. They were forced out by a giant rat and spyed on McGee in the garage using his shrink ray to make the Mystery Machine big again. As he was repainting it, the gang attempted to get the ray, but were spotted. As he was about to shrink them into nothingness, they spread Lube oil on the floor causing him to slip and land on a car creeper giving them the chance to tie him up using cables.