Because outdoor racing just doesn't happen in Montana in the winter. We ran a sumo series. While we had a blast, and the cars were inexpensive, this will probably be the last one. We had problems getting more then 3 cars on the track at the time. Even if they all had different frequencies, they would glitch, could be due to the 20mhz spacing on the sumo channels. Additionally, having to pay 8 for a busted front knuckle (the most common broken part) was a bit much, this is due to the fact that you have to buy a whole pack of parts for that one item. And last, the latest cars are coming with spring clips for the battery holders instead of coil springs the older cars had. This has made the car unreliable for racing.
For fun little bashers to play with in the living room, their great. If Redcat would go back to the coil spring battery holders and offering packs of just knuckles, we would probably run another racing series. The frequency problem we worked around, however it would be sweet to see 2.4ghz in the cars.
Now don't get me wrong, this isn't a flame on the Sumo. It's an awesome car. Simply pointing out what keeps it from being a racing car. Next year we're hoping to get a 1/10th scale indoor track going. We really enjoyed being able to play all winter long.