 Earnhardt who began the race in thirty @-@ second , had moved up nineteen positions to thirteenth by lap 24 . Two laps later , Ambrose began to slow and made a pit stop three laps later to change his car 's battery . On lap 33 , Stewart passed Johnson to become the new race leader while Ambrose 's car went into his garage . Three laps later , Earnhard. had passed McMurray for tenth position . On lap 38 , Clint Bowyer passed Martin for fourth position , as Ambrose rejoined the race four laps later . On lap 47 , Kurt Busch passed Martin to claim sixth position . Three laps later , green flag pit stops began , as Matt Kenseth and Martin were the first to pit . Johnson made his pit stop one lap later . 
