My father once worked at a place in Belfast, Maine. It was called the Bug Shop, and it was all Volkswagens. For a mobile billboard, they shortened a VW Bus, painted the shop logo on it, and put a Porsche engine in it.
He said they drove it once and it was terrifying. They then parked it out front of the shop and it never drove again as far as he knew.
After the first shop burned down, my dad went to work somewhere else and he doesn't know what fate befell the Bus. It'd be cool to see now.