Greg Biffle had been bumped from behind by Jimmie Johnson earlier in the race , forcing him to stop for repairs .
Greg Biffle confronted Greg Biffle 's fellow driver about the maneuver Jimmie Johnson Johnson 's postrace interview .
Greg Biffle had been bumped from behind by Jimmie Johnson earlier in the race , forcing him to stop for repairs , and he confronted his fellow driver about the maneuver during Johnson 's postrace interview .