I've had a Losi electric buggy for several years. Used to run it at the local dirt tracks. Now I just use it to torture the dog.
I have a couple acquaintances that actually make their living driving for RC teams.
Anyone near Jacksonville Fl. want to seriously get into RC, I can hook you up with a friend that wants out. He has a fully decked out trailer with about $12K invested and for sale cheap. I believe everything is less than 2 years old. This would be a comparable first class ticket into RC racing.