Kyle Busch has his sights set on another Nationwide-Sprint Cup sweep, leading after 30 circuits at the Auto Club 400 at the Auto Club Speedway of Southern California.
Busch overhauled Denny Hamlin, his Joe Gibbs Racing teammate, to grab the top spot. Hamlin, who started second, took over the lead from polesitter Juan Pablo Montoya.
Brian Vickers is the man on the move. He has driven his Team Red Bull Toyota into the top five and is running lap-times faster than Busch. Vickers of course is making his return to Sprint Cup racing this year after being forced to miss most of 2010 due to blood clots.
Jeff Burton, who has finished 20th or worse in the first four races this season, started seventh but quickly worked into the top-five, just ahead of his Richard Childress Racing teammate Clint Bowyer.
The race has been green so far, though Tony Raines' Ford erupted in a plume of smoke near the rear of the field.