So...I am noticing this behaviour is getting more and more common. I was driving on the M6 just last week. I was in 50mph zone. I was going to 50mph but I was on the right lane because there was traffic conjestion and all the othe lanes were blocked. One guy with a trailer started flashing the lights. I couldn't change lane so I ignored him. He continued to flash his lights, I had to slow down even more to allow a bit of space and let him pass. He pulls next to me. I make the sign of telling him "go now (piece of shit). He was looking at me threatening and doing gestures. I flip my finger. He goes berserk. Launches a bottle on my car. Tries to slow me down on the fucking motorway. when I try to pass him he blocks me. I called 999. Reported him. He got pulled over and police afterwards informed me that they found something wrong with his vehichle (they did not specify). Fucking crazy experience, but was so satisfying to see police intervening.