wow. as a former resident of the atl, i am familiar with the leadfoot ways of southern drivers. it's certainly normal to go 75 running through downtown on the connector, and don't even talk about what goes on on sr400.
but some dudes got together and decided to drive four abreast (taking up all the lanes of the perimeter) and drive the speed limit--55mph. and they filmed it. you can really see just how freaking slow 55 is.