Doing 80/90 down the fast lane to get to a meet i was going to, network rail van comes up behind me doing over 100 (he caught me up out of nowhere) he starts flashing his lights for me to move, and going right up my ass and then backing off, by this point his van had started swaying at the top and you could hear it screaming its guts off, i then move out of the way to let him past as i didnt want to get involved and he has the cheek to start throwing insults at me, before slowing down and holding everyone else up...