There's an ad running on TV that really shows the stupidity of some (most?) advertising people. This one is by Mercedes-Benz and ends up with the line "introducing the 4 door coupe."
It's a real shame that they didn't take some of their ad dollars and buy a dictionary, and then hire someone who can read. By definition, a 'coupe' is a enclosed vehicle with 2 doors! An enclosed vehicle with 4 doors is a sedan.
These idiots are trying to reinvent the language.