Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The 2001 X-Factor Grand Prix of Sonoma was the fifth round of the 2001 American Le Mans Series season. It took place at Infineon Raceway, California, on July 22, 2001. The Grand Prix of Sonoma is a sports car race held at Infineon Raceway (formerly Sears Point Raceway) in Sonoma, California. It began in 1976 as an IMSA GT Championship race, before joining the American Le Mans Series from 1999 to 2005. It was a Grand-Am Rolex Sports Car Series race from 2006 to 2008.

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