Porsche recently announced their return to top-class motorsports at the FIA World Endurance Championship and the 24 Hours of Le Mans. Scroll up to watch Audi pay them a visit with the new R18 e-tron quattro.
918 Spyder, P1, Videos Place your bets: McLaren P1 vs. Porsche 918 Spyder vs. Ducati 1199 Superleggera