You're lucky they squat AT the speed limit. So often, I see 'em doing it a few MPH Below.
I'll probably get kicked out of the 'heads if I mention what I drive, but one day I was coming home from Monterey on our local Blood Alley / Racetrack / twisty 2-lane freeway. Limit tends toward 50. I tend toward 70 or so. 2 minivans jockeying for position - one going 45, the other passing at, I don't know, 47. Blocking everything. Nobody in front of either of 'em.
I try to be patient, and control myself, I really do. Just wait, and pass smoothly at 60ish. But I simply can't abide. So slip down a couple cogs, turbo kicks in, and they are so far behind I can't see 'em by the next turn.
I don't expect everybody to get out of my way or anything. If you're over the limit but slower than me, I'm usually content to slip in behind and see how things play out. Just use the left lane for passing, or when you are moving that much swifter than those in the right.