Detroit 2011: Porsche reveals the 918 RSR Hybrid (video)

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The North American International Auto Show kicked off with a bang with the unveiling of the Porsche 918 RSR, a racing laboratory that mixes and matches the technology of the 911 GT3 R, the style of the 918 Spyder and the design of the 917 that has dominated the Le Mans 24 Hours. Full story...