I actually got on the horn this week to a woman in a red beetle who I had the misfortune to follow. Not only did she feel 20mph was more than enough, on the 3 islands I followed her across she decided that give way actually means stop, apply handbrake, take some time to have a good look around and then release handbrake and pull off when, once again, you are 100% there is not car within 5 miles. I got to the 3rd where she did this, 2 of them where no cars were to be seen anywhere and got on the horn and did a shaky fist at her. I think I learned her good.