It seems that as a car culture we constantly battle practicality with performance...isn't that why we drive our R's? Volvo has been a long time champion of Biofuel and even bi-fuel vehicles but hasn't melded that in a sporting capacity (nor has any other manufacturer that I can think of). I am glad to see that Audi has pushed the envelope further with promoting its R10 (diesel powered) race car. It is slated to run the 24 hour LeMans race and just WON 12 hours of Sebring by 3 laps even after starting from the pits in 34th after overheating problems. For tech specs Motortrend did a great piece on it. But what makes me excited is that a company saw potential in technology typically considered conservative by performace standards. Briefly, the designers felt that Diesel would give them more laps between fill-ups, Fewer parts in the engine, and GOBBS of torque (they went with five speed tranny for durability and the fact that the extra gear wasn't needed with all the grunt). I hope other manufacturers take note and see that sporting and sensibility can go hand in hand. Volvo in my mind stands would benefit the most from this as their corporate identity is already built around that philosopy in part. 2009 C70r transverse V10 turbo diesel 400 hp 600 lbs tq and 35 mph. Yeah baby.