A very long time ago, r/c on-road racing was pan cars. Suspension cars came, and made the handling all that much better, but the cars still needed a huge track. Then 1/10 scale came along, and finally the 200mm cars, which could be raced both on "real" race tracks and also on the small tracks set up in parking lots, all over the country.
Now that the 200mm sedans have gotten so sophisticated, I think they're once again mostly for the huge "professional" r/c tracks, and are less suited for parking lot racing. For someone just getting into the hobby, it's once again a choice of getting very involved and traveling to races, or getting an off-road car.
The GT cars have brought us back to where we were a while back, with cars that can be run anywhere, on any surface, and in almost any track condition. For a bit over $400 you get a car that can take a lot of abuse without breaking, a low-cost engine, and tire rules that eliminate much of the expense of racing the smaller sedan cars.
The people with these cars are excited. The magazines are excited about all this, as it might bring a LOT more people into r/c racing, not to mention just messing around having fun with the cars.
Several people at this race showed that given dry conditions and a little racing skill, these cars can get around the track just as nicely as the smaller sedans. My prediction is that as time goes on, this will become THE class for the future.
One more photo to copy over here - there are several hundred posted on www.sgrid.com
but to view the galleries you need a flash viewer. Anyway, here's the best photo of all the racers: