2011 Porsche 918 RSR Concept

A hybrid by nature and a sportscar by trade, the Porsche 918 RSR Concept is the motor sports version of the 918 Spyder. It has the same drive-train as 911 GT3 Hybrid, but with improved engine and performance. Powered by a 6.2 litre V8 engine producing a power of 767 combined hp by 2 electric engines. (autoevolution & carztune.com)

(Photos from egs.pca.org, carztune.com & autoevolution)