I agree Dez, I had a power nap in my car and woke up feeling like death! I dread to think what it would be like in the winter months.
Regarding the event as a series, I agree with Mr SlowOne, we shouldnt wear it out. I would still like the September race to go ahead though as all the new rules with brushless and tyres have me too excited.
Maybe just fix the next one after that for Le Mans 2012 on the 9th-10th June and keep it yearly from there?