You can always get their license plate number, and then (GASP!!!!) call the cops.
Let them know they purpousely and repeatedly tried to run you off the road.

That my friends is called road rage, (assault with a deadly weapon), and depending on the severity can either be a misdemeanor, or a felony offense.

Even if they don't get convicted the cops may track them down to get a statement from them. that should be enough hassle to give the average citizen pause before being a$$es on the road again.

 

Hmm...Like i said in another topic just kill them, that will make them think about doing it again...
Because its going to be chitty chitty bang bang up in here!!!

(/Sarcasm)

I usually just give them the finger and make them a blur in my mirrors

 

+100 christ