i get the old "slam the brakes on" trick quite often with being a waggon driver at night , easy target as always going be insured and cant stop 44 ton as quick as a hired fiesta
its got to the point that i can spot them before they try it just by the type of car / how many in it / if anybody else is about etc , i now cover the brake ready for it or just slow down and make it obvious ive sussed them , they normally piss off then
as for flashing me out then driving into me , there not much i can do when pulling 50 foot of truck out other than a look of " i WILL drive over you if you try " on my face !