I HATE when people do this. You were going slow and blocking the way for ages and now all of a sudden when you get passed you're a speed demon? The best is when you move right again they don't pass, they just kinda stay a bit behind you, as if you being 5 feet ahead is going to make make you the preferred target of any cops out there.

Even worse are the people who don't move under any circumstance but when you go to pass them (sometimes on the right, if need be and depending on the roadway) they speed up to block you.

As Ziggy said, the left lane is for passing and nothing but...

I need to build up an old Humvee and use it to knock cars out of the left lane