Stupid driving. But I guarantee you this. If you reported this to the police then your use of rude hand gestures would work against you, as the police would see is provocation. Don't do it mate..be the bigger person. Don't give an idiot driver even more reason to try and wriggle out of an offense.
found more on him GARRY LYON was living shayfield drive wythenshaw according to article in manchester evening news ! http://www.manchestereveningnews.co.uk/news/police-hunt-conman-garry-lyon-7418510
this guy needs stopping !!! calling the police in the morning to have a chat