The mentality of some drivers bites.
Happens everyday in the UK and very little will change it. Sometimes you can make them feel so very small. :) Was once driving a HUGE Mitsubishi L200 Double cab Pickup and a berk in his Vectra repmobile was riding my a*se in a contraflow so absolutely nowhere for me to go. If I'd braked sharp then I would have felt a slight nudge as his car folds under my rear axle. The best bit was the fact that while he was sat flashing behind me, expecting me to move in to the tiniest of gaps so he could move forward, ooo, about 10 feet in the traffic queue, he failed to notice the police car in front of me.
I managed to get into a space next to me, vectra boy floored it one and almost drove into the back of the police car that had stopped due to the traffic. Lights came on and he signalled him over. Wonder if the berk saw me laughing my head off as he had to make his way across the carriageway. :)