O, sorry, yeah, Race starts at 10:45am saturday morning and lasts for 12 hours. It's basically just one of the most famous alms races on the east coast held in sebring fl, about 9 hours away from Atlanta. Tickets are like $70.
There are huge parties/afterparties there as there is free parking.
http://www.311unity13b.com/sebring_03.mpg just about coveres it.
By the way, I decided I wouldn't be going due to a local autocross and few other driving friends interested in taking the drive / paying the ticket price.