What do you mean by "enhance the paint"?
Teflon requires application at a very high temperature (something like 340*F) in order to bond to a surface. Unless you plan to wax your car in a giant furnace, don't be fooled by the marketing gimmick of Teflon-laced waxes.
Oh BTW, even if you were to wax your car in a giant furnace, the melting point of wax is far below ~340*F, so you would melt the wax off anyway.
DuPont came up with this Teflon idea (I think it's a great marketing idea, since it fools so many consumers) and people think that their cars will have a great, non-stick surface just like their cookware.