FYI the AT in georgia is about 90 miles from Atlanta, so it has the same potential usage as the Whites does from Boston. What is different is that there are numerous fire roads passable by car that run up to and along the ridgelines. A large stretch of the first day or two of the AT is roughly parallel to a fire road on either side of the ridge line. There are some gaps and summits along the way, but the terrain is mostly a lot more gradual than the whites making it easy for less fit and presumingly less well educated campers entering the area. The thruhikers tend to be their early in the season, but the bears get reinforcement for the resst of the summer and the fall from people out for a few days.
The start of the trail on Springer is about a 45 minute walk through the woods from a forest service parking area and the approach trail is accessible from a couple of fire roads. While slacking down there, it was quite common to see weekenders partying at pull outs all through the mountains. The whole concept of LNT doesnt seem to be ingrained very well for the car camping crowd.