Continuity mistake: When the car crashes on the bridge, it slides against the barrier on the middle of the road and flips over. As it slides, the bus on the next lane is seen to be more ahead of the car. The shot then cuts to Fuller yelling out "Oh, shit!" and it cuts back to he car flipping over. Only now, the bus is suddenly right next to the car, ready to drive past it.
Picture added by Casual Person