One of my kids pointed out that we were speeding on the Perimeter one day during moderate traffic. I slowed down to the speed limit for them to make a point. After about 60 seconds they were begging me to speed back up.
WOW! That was a dangerous demonstration!
The de facto speed limit for the far left lane on metro Atlanta highways seems to be 80, from what I can tell. Do you know of anyone getting a ticket for less?