Hey look: It's an M version of the BMW 6-Series Gran Coupe, which is the sedan version of the coupe version of a sedan.
Will there ever come a point that BMW, Mercedes, and Audi buyers realize that their cars aren't really unique, uncommon, and prestigious anymore?
I predict that once the real econo-lux cars come out, lower-income people will snap them up like Hondas. Then they'll be all over the place, and the more affluent buyers will start to associate the brands with lower-income people.
Argue all you want — (most) rich people buy the cars they do because poor people can't have them.