Thanks Gordon!
http://www.midohio.com/Store/School-...bra-Club-Event
The main page says 8 or more on tracks for the Advanced group and the page above says 5 or more.
In any case, folks new to the Mid Ohio Cobra School should remember that the advanced group is
definitely for the more experienced drivers. But also know that you can always move up or down a group with the instructors' OK, if you feel that you may have placed yourself in the wrong group after a session or two.
If anyone wants a great read, you should consider this one:
http://formula1.about.com/od/booksan...rne_Review.htm