Simply called the AMG GT Concept, this show car previews a four-door performance sedan to join the GT coupe and convertible. But as a technological showcase, it's much more impressive than simply stretching the sports car's wheelbase and adding an extra couple of doors.

Maybach may have been relegated from its own brand into a model designator, but all the while Mercedes-AMG is transforming into a performance automaker in its own right. It developed and produced the SLS AMG in-house, and did the same with the AMG GT. And now it's revealed its third at the Geneva Motor Show.

Bearing the new EQ Power+ designation introduced on the W08 F1 car, the AMG GT Concept incorporates a performance hybrid powertrain packing one heck of a punch. It's built around the same 4.0-liter twin-turbo V8 as the existing two-door model, but adds an electric motor to deliver over 800 horsepower.