Brian:
As Redsled mentioned, we have a few instructors that own/race/open track Vipers.
I myself own a Viper (00GTS) and we always have a few Vipers at our events.
To answer "Driving School" Kinder :
Running an open-track/ race event is not cheap, anywhere between $16K to $24K for a weekend ( you can get more info on cost on our website NCRC.ORG )and consequently it is not surprising that very few clubs run their own event and the NCVCA is no different, Either they just get some members together and go,as regular paying customers, to another Club (as in Green Flag) or they make a deal with VD and "rent" a Friday/slot time at a VD event.
There is nothing wrong with that but they do not manage ( meaning renting the track, hiring the corner workers,etc) their own track day
As an open-track/ race organizer, you should not expect to be in the black at each event you run, some make money, some break even and on some you loose money (sometime a lot)so, the decision to run or cancel an event is not based only on the estimated financial picture for this specific event but rather on the financial impact that this event will have on your bottom line at the end of year and, more importantly, on what is the goal you're trying to achieve with your Club.
If you run a Club only as a for-profit business,making a living out of it, with maximum income as your only goal, obviously, you will try not to do any loosing event, but, if your main goal is to have fun and offer a service to other drivers that suffer the same addiction than you, as long that you break even or make a little money at the end of ther year, you don't worry about making money on evey single events nor do you expect to make a living out of it.
That do not mean that one formula is "better" than the other one, just that you have more than one way to run a club, and from a driver point of view, the more clubs, the better.
Luc. 00GTS
PS: Brian, I will be more than happy to "comp" you a track day, just contact me off line