Discription of Events: Male driver cut off several vehicles, his van says Spectrum Contractor on the side. He then flipped high beams repeatedly as to blind other drivers, driving in multiple lanes. Driver almost side swiped 2 vehicles. Then when driver got angry, he opened his window and flipped off drivers and continued to drive erratic, if you even got within 3 car lengths of driver to try to obtain plate number, Drive would violently stop in the middle of the road - down to about (10MPH), in a 55 and 65MPH. I got a photo of plate and driver flipping others off because I stayed in the lane next, hung back and allowed my passenger to take photos.