Multi lane highway, speed limit 100 km/Hr (approx 60mph). I was in the inside lane , doing about 110 (70 mph), which was as fast as you could get away with (heavily "radared" stretch of highway). Outside lane fairly congested. Guy came up behind me at about 120km/hr and sat right on my tail. I didn't change speed, but pulled into the outside lane as soon as possible (about 60 sec) to let him past, then pulled back into the inside lane.
At this point he leant his entire body from the waist up out of his window,
facing backwards!!,

to hurl abuse at me into the 70 mph slipstream.
I pulled back thinking "I wonder how many times he's going to roll?", but, to my amazement, he managed to keep it on the road.
But it's OK, the organ recipients don't care what sort of tosser the donor was.