Slow drivers in general piss me off. I live off a two lane road and the speed limit 45 mph. I always end up with that jerk in front of me who is going 30 mph. Since the road curves a lot, there are signs that say "Do Not Pass". Ugh!
Also, I agree with SATX...you see someone coming who you know is driving fast and you know you will going slower than them. Please don't pull in front of them. Just wait til the pass and then make the turn.
Another thing:
HAVE YOUR CHANGE READY BEFORE YOU GET TO THE TOLL BOOTH! ESPECIALLY IF YOU'RE IN THE EXACT CHANGE LINE!!!!!
Nothing is worse then sitting behind someone for five minutes as they search their cars for any loose change they can find.
I'm done!