My most memorable encounter with black ice happened at 2 am while crossing The Great Smokies National Park while playing the "Twice The Safe Posted Speed Game" with a buddy in college (and that is not just an attempt to be humorous... it was the actual moronic game we were playing).
I don't know if anyone reading this has ever made the drive from Gatlinburg, TN to Cherokee, NC, but we were right at the highest point near Newfound Gap... in a curve... in a 1977 Volkswagen Rabbit... doing a little over twice the posted speed limit... when we realized we were on a solid sheet of ice by a 400 ft cliff. I knew if I touched the brakes we were dead. Dead and probably not discovered for a long, long time (no skid marks to show where we had gone over since it was all ice).
The trip down the mountain to Cherokee featured a new game I call the "Don't Get Out Of Second Gear Game."
Ah to be a young idiot again...
Rob you are correct about the drivers here in GA. Really any weather event will cause havok. Snow, ice, rain, "sunshine slowdown"... Nobody is willing to adjust their driving to suit the weather (and not just young idiots either). My commute routinely sucks because of that fact.