> Actually a jerk walking may kill you and your kid...its called "mugging" which can happen when you walk places, and which really can't happen easily if you are in a car.

“Mugging” can't happen in a car only in the sense that when it happens to people in a car, it is called “carjacking” instead of “mugging”.

It's a lot harder to carjack someone than to mug, to be honest. Colleges in particular tend to be pretty serious about the risks of danger of being accosted,to the point of littering the campus with callboxes and maintaining a security staff. My point though is that it's not always a one to one comparison; walking has unique dangers to it.

That's a question of intent, and in my mind a different matter. I meant jerk as in inconsiderate, not murderous.