Excerpt: "GTspirit Video: Hot Lap at Infineon Raceway in Audi R8 V10GTspiritAudi of America took their Audi R8 V10 sports car to the Infineon Raceway for a hot lap. The following clip shows the lap at the race track in Sonoma, California, US. The Infineon Raceway a 2.52 miles (4.06km) 12-turn road course and drag strip located …"

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