Italdesign Giugiaro will unveil a concept for a fast but fuel efficient hybrid coupe at the Geneva auto show.

The Italian design and engineering company says the two-seater can reach a top speed of 186 mph (300 kph) and accelerate from 0 to 62 mph in less than 4 seconds.

The still unnamed concept will travel 117 miles on a gallon of gasoline, Italdesign says.

Giugiaro will announce technical details of the hybrid powertrain at the Geneva show, but a source said that a Wankel rotary gasoline engine powers a generator. Traction comes from electric motors that power each axle, creating a permanent all-wheel-drive setup.

The wedge-shaped coupe features a body made entirely of aluminum and carbon, sitting on a carbon-fiber chassis.

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