I can't really see how taking on an aggressive driver firing something at their car is a smart thing. Not saying I haven't felt like it myself. But if they are already aggressive, what do you thing that is going to do with your odds of an altercation. Whether that be metal to metal, lead based or just in your face. Besides the fact that the next time for them. it may not be you, but another biker they take it out on.
Buford's altercation is at least one that has them stopped instead of aiming a 3000 lb weapon and firing back....one that the biker is sure to lose. Plus the possibility that the witness for your side of the argument will never be able to testify in any earthly venue.
I have often just slowed down to the point they passed or at least backed off if that wasn't possible.