Something this discussion presupposes, I guess, is that every time you take your car or truck or SUV out for a spin, everyone around drives safely and you drive safely and everything always turns out all right. But the fact of the matter is that this is not always the case; stuff happens out there on the highway, as we all know. I'm not sure that I'd want a gun with a cable lock attached to it clanging around the cab after a crash while I'm going 25 mph, let along 65 mph. It just conjurs up all sorts of nasty, scary thoughts.