I agree with all of the above...

But as I do 500 M/Way (M4,M25, M1) miles per week, the ones that currently wind me up the most are.
Middle/outside lane hoggers.
Muppets who speed up then slow down in front of me when I'm in cruise.
Twats with their rear fogs on when its not foggy.
Plebs that cut into my lane, causing me to brake.
Cocks that don't indicate when change lanes.
Jerks that slam their brakes on when they see blue lights on the other carriageway...
Aaaah, I found that quiet cathartic...
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+1 spot on!