112
You fire, and above the roar of the engines you hear the leading rider scream out in pain. (Remember to deduct the relevant number of rounds from your Ammo Pouch.) Your gunfire has wounded him in the hand, severing two fingers. He loses control of his machine, which swerves violently to the left, somersaults, and then bursts into flame.
The incident scares the other riders sufficiently for them to pull back to a safe distance. They continue to tail the truck, but at least they are now out of range.
