Todays infuriation: Drivers who cant keep to a set speed limit...
Take my example:
40mph limit, car in front drives at 30mph rather annoyingly and for no apparent reason.
Limit changes to 30mph, driver then breaks this and drives at 35mph, therefore pulling away after infuriatingly keeping you at bay for a few miles.
I can't think of any explanation for this apart from pure incompetence? Anyone else agree? Or if you know why some drivers do this i'd be intrigued to hear an explanation!