The Audi’s diesel-powered R15 will debut in the upcoming  2009 12 Hours of Sebring race later this month. Replacing the successful V-12 R10, the V-10 R15 produces 650-plus hp and 774 lb-ft of torque. The R15 was developed with Audi’s Computational Fluid Dynamics, which helped the automaker make the most of the carbon fiber body… Read More