Our family took a Segway tour with CK throughout Atlanta and Inman Park, Cabbagetown, the MLK Jr. area, the Oakland Cemetery, and other locations around Atlanta. As far as we were concerned he could have given us a Tour of a burnt out corn field and it would have been a great time. He was funny, engaging, knew his facts, courteous to traffic (an important part of his job and your enjoyment on the tour), and was a joy to be with for the three hours the tour took.
The Segways were well maintained and clean. They rode well. The introduction was easy, and everyone was up and running in no time. The tour covered about eight miles, so while you don't have much time to stop (I'd have liked to stop a bit longer at the Bobby Jones gravesite, for example, or to take a few more photos than we were able to take), you are treated to a fairly significant number of important sites, their history, and you get there in style while enjoying a Segway ride.
I recommend this to everyone, and if you can, ask for CK, who will undoubtedly tell you about his newly purchased condo. :-)