The cars arent bad, carpet really slows them down, luckily I mainly use it in my living room though, which is all hardwood.
The car is a bit noisy, but I feel its just the tires, and I just threw a set of foam tires + black subaru rims onto the car, so I'll get a verdict after that
If anybody wants to see a video of my car run (stock spec 2 for now, 4 cell mod soon). I can get a video, my digi cam makes it easy. I've got a video of my jumping it from my hardwood floored hallway to the carpet in my doorway to my room, but it's a little dark, heh.