Highlighting this expansion, Acura unveiled an "Advanced Sedan Concept" to signal what its "future design language might be." Timid it isn't.

Though sized close to today's RL, this vision of a circa-2020 flagship Acura is a sort of Chrysler 300-meets-Batmobile, a low-roof four-door with big wheels, knife-edge bodylines, a pointy "boattail" rear end, and a somewhat menacing face.

Styling, of course, is subjective, but we predict negative reaction to this car may send Acura designers racing to the drawing boards in their newly built studios.

Acura Advanced Sedan Concept