You know...we have never had a problem with Atlanta Traffic. Maybe it's just us. We hop in the HOV lanes and just go. I have never thought it was as bad as Chicago traffic, so I'm always baffled. Maybe we just time it right, we don't intentionally time it that way.
DH was doing Richard Petty driving at the Atlanta Speedway, we stopped at the Puppet Museum on the way, so I know we were down there during a weekday at one time and we still didn't find it horrible.
We stopped North of Atlanta though last year on our way down since we just physically can not pull an allnighter for driving...did that from the Atlanta Motor Speedway and words uttered "Never Again" as soon as we pulled in the drive (considering both DH & I were basically asleep at the wheel, I tried helping out but I wasn't any better than him at that point).
I just know we left at about 3 AM or maybe 4 by the time we got everything done and I think it was around 11 pm or so getting to our hotel in Marietta. I don't remember the exact time but I know we hadn't had dinner & was hoping a pizza place was still open so it was late. (I can't remember if the time change had already taken place or not though. I always get that messed up when traveling.) Of course, we could be slow drivers...we did stop at McDonald's for breakfast around 8 AM and then a picnic lunch & pit stops with 4 kids is not a quick event.