I just checked with NASA and they still have a few slots open for the driving school this weekend at Charlotte/Lowes Motor Speedway. Some of the cheapest instruction you will find.
Let us know if you are coming so we can provide food for the Cobra community.
http://www.nasaracing.net/7Sep02/index.shtml
In addition, we'll be running the Spec Cobra races on Saturday and Sunday. It should be exciting as two teams are tied for first place in the standings.