Don't Forget the Motor City

When Peter gets a new car, it suddenly and unexpectedly blows up. The Ghostbusters are then summoned to investigate malfunctioning equipment in a Detroit factory where the cars came from; they discover that gremlins who have been left over from World War II, are messing with the plants equipment. In order to defeat the gremlins, since their weapons only work on ghosts, the Ghostbusters create a special vehicle that the gremlins cannot resist.