This morning one of our American bus drivers was harassed by a Kuwaiti driver. The car was cutting the bus off then slowing down. Unfortunately the driver made the choice of pulling over to confront the Kuwaiti which led to the Kuwaiti guy slapping the US driver twice and then trying to get on the bus until he realized it was full of Americans ready to beat his @$$.
I would have pulled over behind the guy and once he got out of his car I would hit the gas and leave him in the dust, I've done this before, it's rather funny to see the look on the guy's face. But I would never ever willingly open my window for anyone, it can get dangerous that way.