So we know by now by looks and power that the RBR is not a Prius, and the same goes for the price tag; it is expected to cost about $600,000 when it goes on sale. We have to wonder if the German automaker might force rivals Ferrari to producing such a fuel-efficient vehicle? Not that we know what the MPG figures are.

NY Times has learned that the Porsche 918 RSR Hybrid: is powered by a 563 horsepower V8 gasoline engine and a 202BHP electric motor. However, the system used is much the same used in other hybrid vehicles, so relies on kinetic energy to build-up and store to power the electric motor. However, what is different is how that extra power can be called upon to supply an extra burst of energy – much the same as KERS that was used in F1 and is to return for the 2011 season.

Motorward points to the fact that as this is still a concept at the moment, then there could be a few things that will not make it to production. Some of these features that could get lost include the wing doors, the unique air-intake, roof-mounted aerials and much more.