The Sprint Cup Series heads to the Atlanta Motor Speedway this weekend for Sunday's AdvoCare 500 in Hampton.  Kyle Busch is the only one of the four drivers who has previously won a Sprint Cup Series race at Atlanta.  He gave Toyota its first-ever victory in the series at Atlanta in March 2008.  He has won four races so far this season.  Busch, the current points leader, Jimmie Johnson, Matt Kenseth, Carl Edwards and Kevin Harvick have already clinched a spot in the Chase for the Sprint Cup championship.  The remaining seven positions in the Chase will be decided during the next two races, Atlanta and Richmond.  Brad Keselowski won last Saturday's race at Bristol.