Absolutely Amazing.  I'm from California, but I went to Chicago with a bunch of my friends and we decided to try this place out.  They had some special that was like 3 races for $20 I think, but of course you have to pay for the head sock and license.  I think this place had the option to purchase a reusable head sock or a disposable one.  The reusable one was great, And I still use it at other places here in California.

This review is based on when I went there in August of '09.
Probably the biggest track I've ever been on, and I've been to a bunch of go-kart places.  I don't know if they change up the track much, but when I went, the straightway was SOOOOO Long, that a few times I didn't even floor it, I was going so fast.  

Price was very fair.
Can't remember how helpful the staff was.
The Best Go-Kart experience I have had so far.  And today's date is 04/22/11