When the boys are trying to evade the girl's father and brother that Johnny Knoxville's character had been getting familiar with, the son is shooting at the old car. Without knowing he knocked his father out, the son leans out the truck and shoots near the driver's door of the Dukes.

Now consider this: they are DIRECTLY behind the "pre general", and the son shoots into the DRIVER's side, from the PASSENGER side of the truck.