A friend invited me to be part of a 3-driver crew at the 12 hours of Homestead this coming May. I've got pretty limited track experience in a car (two track days in a car, probably ~25 on a bike though) and I know I'm nowhere near as fast as these other guys. And I've never driven a Radical so I'm pretty nervous about doing this But, I'm really easy on the car and on tires and I never crash *knock*.

Anyone done this? What should I expect?