what drivers competed in the auto club 400?
jeff gordon, mark martin, jeff gordon, jeremy mayfield, rusty wallace, jimmie johnson, kurt busch, jeff gordon, greg biffle, matt kenseth, matt kenseth, carl edwards, matt kenseth, jimmie johnson, kevin harvick, tony stewart, kyle busch, kyle busch
of those drivers, who competed in april?
jeremy mayfield, rusty wallace, jimmie johnson, kurt busch
of those drivers, who is not kurt busch?
jeremy mayfield