djerms::: pare boxers have been around for quite a while. Posrsches and subaru are the main proponents of these types of engines. "Defy gravity?" i dont think so. :D
Boxers, being shorter in height compared to inline or V engines, give the car a lower center of gravity, improving handling characteristics (well, in general at least). I think this was what the salesman wanted to say. If a boxer engine defied gravity then, well heheh, we'd have flying subarus :D