Theres about 30 or so guys that bought some Losi Sliders. We've taken touring cars and made them into late models too. We have 3 guys who have built tracks in there backyards, and we rotate tracks on the weekends.
I recently got alot of guys at work into it, including my boss and owner. They put on the Indoor Kart Championships every year, and have some land, so they are going to build a 4th track as it gets warmer.