If you ever make it up to Boston and have some time to kill (and money!) head over to F1 Boston and check it out. AWESOME indoor and outdoor kart track with transponder timing, multi-level layouts, incredible facility, etc etc. I met a fellow corner-carver there and he and I had a great time whipping all the other folks that showed up!
Yes my pictures are not the greatest, but check out www.f1boston.com and go there next time you are close!!!