I went to Autobahn Indoor Speedway earlier today, it's freaking awesome!! The place is kinda a bitch to get to inside an office park off Philips just north of JTB. (6601 Executive Park Ct N) They have two tracks there, the Monaco which is curvier, and the Le Mans which is speedier You go around the track fourteen times, which is very lengthy.
I went and did the 5 races for 75 dollars(it came up over 80) and they give you a card. I used three of my five races; Two by myself on each track, and one vs two employees on Le Mans who kicked my ass even though I was driving pretty good. There were other groups racing off and on, but I just happened to be selected offset from them. Crowds started to pick up a little when I left. I really hope that they advise the hell out of that place with billboards and commercials, because it's really worthwhile.