Basically, the Carpoon is a barbed spear launched from an authoritative vehicle at bad drivers' cars. The tip of the spear is designed to penetrate metal, but not to penetrate too far and cause excessive injuries. Of course, the tip is not able to be removed from the car without special tools.

Several fun modifications can be added; such as a parachute that opens once the Carpoon is lodged into the bumper or fender, or a steel cable with a comical ACME safe attached to the other end. Both of these devices would slow and/or annoy the driver of the offending vehicle until they were forced to leave the herd.

More fun can be had by making "trick shots" with the Carpoon: such as shooting the left-most vehicle in the heard of minivans in the right side front fender with the parachute equipped Carpoon. The resulting drag from the parachute would pull the offending vehicle to the right and [hopefully] force the entire herd of grocery-getters to the right side, leaving the left lanes clear for those of us who know how to !@#$%^& drive.