Where do you draw the line?

[tomgun1]

from personal experance this almost always works with one aggressor,if your at a traffic signal and he is out of his vehicle comming towoards you, take a right and another and another.
if not in traffic make sure your car is as far as possible from the aggressors car...creep ahead as he approaches and take off,as one would guess,by the time he gets back to his vehicle your gone.this is assuming no weapons are involved.

[King 5.45]

Read the story of Gary Fadden to see just how badly things can go for someone who seems to have everything on his side in just such a self-defense situation as the OP describes:

http://findarticles.com/p/articles/m...g=content;col1