It's been awhile since a driver's hostility has been directed towards me while I've been on a bike. A couple of years ago I did nearly get hit by a van that was being driven in a hostile manner though I don't think he was being hostile towards me in particular. He was just a maniac.
I saw an altercation between drivers a couple of weeks ago when one driver thought the driver in front of him was too slow to make a left turn through an intersection. He just laid on the horn. When the first driver eventually did turn, the second driver cut in front of him, stopped the car, got out and walked back towards the first driver yelling obscenities. At which point a 3rd driver rolled down his window and yelled at the 2nd driver for blocking traffic.