I have been looking at Volkswagen Beetles rear deck spoiler. I believe I want that type of spoiler location on my 451 Smart. I love the photo shop pics I've done on my Smart. It would be just about where Smart lettering is on the rear hatch under the glass. Almost a mini Porsche wail tail. If it's not windy I will mock it up with a piece of styrofoam this weekend and see what I think.