#BMWM8GranCoupe

There are certain flagship luxury cars that suggest the driver has “made it” – assuming “making it” means climbing the corporate ladder to the point that owning and driving a large, imported luxury sedan with a six-figure price tag is no sweat, financially speaking.

The Lexus LS, BMW 7 Series and 8 Series, and Mercedes-Benz S-Class have typically been the cars most people think of when the phrase “flagship luxury sedan” is spoken. And rightfully so – those are all worthy vehicles. But sometimes, the boss likes to cut loose.

Which is why the LS has an F Sport trim, and Merc has an AMG S-Class, and so on. As you no doubt know, “M” is the magic letter when it comes to BMWs.

BMW’s 8 Series coupe isn’t even here yet and the automaker is already toying with the idea of a sedan. Of course, in true luxury automaker fashion, it’s calling the four-door concept a Gran Coupe — proving once again that the language has evolved to a point where it is as fluid as it is meaningless.

Officially dubbed the “BMW Concept M8 Gran Coupe,” the sedan offers a conceptual glimpse at a performance variant of the brand’s returning 8 Series. The plan appears to be: build something that can compete with, and perhaps trump, Mercedes-Benz’s S-Class. But if you’re going to take on the big boys, you need to come at them with everything you have. That means a base model 8 Series coupe with double-wishbone suspension, rear-wheel steering, adaptive suspension, xDrive, gobs of tech, and a strong motor.

However, you’ll also need a nasty four-door M variant with all of that and a rip-roaring engine, larger air intakes, flared fenders, and a carbon fiber rooftop.