AUDI R8.

The Audi R8 is a sports-prototype race car introduced in 2000 for sports car racing as a redevelopment of their Audi R8 (open top LIMP) and Audi R8C (closed top LMGTP) used in 1999. It is one of the most successful racing sports cars ever (alongside such greats as the Porsche 956/962) having won the 24 Hours of Le Mans race in 2000, 2001, 2002, 2004, and 2005 (five of the seven years it competed). Its streak of Le Mans victories between 2000 and 2005 was broken only by the Bentley Speed 8 (powered by the same V8 twin-turbo engine) in 2003, when the R8 finished 3rd.

The petrol-powered Audi R8 race car was replaced by the new Audi R10 TDI Diesel in 2006; however, the need to further develop the R10 meant that the R8 saw action in a few races leading up to Le Mans.

Mazda Furai.

The Mazda Furai is a concept car revealed on 27 December 2007 and manufactured by Mazda.A teaser image of the vehicle was released on 11 December 2007^.The Furai officially debuted at the 2008 North American International Auto Show in Detroit.

Wing and Exhaust in detail from the Mazda Furai on display at the 2008 Canadian International Auto Show.

The Furai meaning "sound of the wind", is the fifth and last of the Mazda Nagare line of concept cars that have been made by Mazda since 2006. The chassis is based on the Courage Competition C65 Le Mans Prototype that Mazda last used to compete in the American Le Mans Series, two seasons previously and is designed to use E100 ethanol fuel, it is powered by a new generation 20B 3-rotor Wankel engine that puts out 450 brake horsepower (340 kW). The engine is developed and built by renowned rotary tuner, Racing Beat, who also built the car's rotary-shaped muffler canister.