We talked about this but it appears there are several major hold backs to the idea.
1. Personal vehicles will be required to have, at a minimum, working factory installed restraint systems (working seat belts) or the equivalent. Tires should have at least 3/32 tread or be DOT approved race tires. Brake pads should be less than ¼ used, performance brake pads recommended. No visible fluid leaks.
No convertibles unless equipped with proper roll-over protection. 
No SUV’s, vans or trucks permitted. Loaner helmets are available at the track.
2. $625 min

. with your street-legal car and that does not include any of the course training
All info on Mid Ohio is here if interested.
The Mid-Ohio School - Which Course Should I Take?
Makes the $25 for 3 laps at Watkins Glen look like a better deal especially with the opportunity to have the course for our group only ( no public) with the availability of a lunch and other amenities. Our trip there this past summer was a blast and if we can get a group together we plan on going back again next summer as well. Lots of time to work on it, something to think about for next year.