After several high-speed testing sessions at Germany's famed Nurburgring circuit, the '04 Corvette Z06 became one of the few to achieve a sub-8-minute lap through the track's 14-mile course with approximately 170 turns and constant elevation changes.

How do those refinements transfer when the rubber meets the road? After several high-speed testing sessions at Germany's famed Nurburgring circuit, the '04 Corvette Z06 became one of the few to achieve a sub-8-minute lap through the track's 14-mile course with approximately 170 turns and constant elevation changes.

Improving on a good thing is difficult. Improving on a class-dominating racecar and a secure street fighter can prove almost impossible. With the newest release of the Z06 and C5-R, "almost" seems to be the operative word. The only thing better than issuing a Commemorative Edition Corvette that pays homage to a world-class, two-time winning C5-R would be building one for a three-time class- winning C5-R. By the time you read this, we'll know if they won three in a row at Le Mans. It would be a shame if they had to go back and change all those badges on each of the Commemorative cars, but we're sure GM wouldn't mind too much.