AVONDALE, AZ - OCT 5: Greg Biffle (16) leads a line of cars during a NASCAR Sprint Cup track testing session on Oct. 5, 2011 at Phoenix International Raceway in Avondale, AZ.
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AVONDALE, AZ - OCT 5: Greg Biffle (16) leads a line of cars during a NASCAR Sprint Cup track testing session on Oct. 5, 2011 at Phoenix International Raceway in Avondale, AZ.