Heres a pic of one of our race machines. We had 3 complete brushless setups with several spare motors with modded rotors. We had 2 12th scale ovals, and like REEDracing94 said we had a total of about 19 RC cars, approx 30 sets of batteries (10 matched race sets 10 practice 10 scrappers), enough spare parts to build 3-4 more cars, personal transponders, high end charging/discharging set-ups, and private pit space at our local track so we didnt have to haul 6 pit bags to the track every time we raced.
Sold it all off due to it becoming more like a job than a hobby. Didnt realize how much $$$$ we had invested into racing until I sold most of it off, and found I could easily fund the atv hobby off the sale of RC racing gear.
12th scale oval with a body to match the previous car