These 2 things along with keeping right piss me off the most. I know your dumbass has cruise control, it's pretty much standard equipment on most cars now and if you don't pay the fuck attention and maintain speed.
The slow drivers on the on-ramps is probably top of my list. Holy shit, please don't drive 30 mph down the ramp, wait until you're 2 car lengths from HAVING to merge and then try to either speed up a little and cut someone off or just park at the end of the ramp, every time someone does this in front of me in my truck I just want to push the 4low button and push these fucks out of the way. It's a ramp, it's long as fuck for a reason, even if you have the slowest piece of shit car you can get up to a decent speed before the end of the ramp.