Here are a couple of laps at Autobahn Country Club. The private event had lambo's, ferrari's, cup cars, Gt 3's ( crap loads ), a lotus club, and much more. Many were running on race tires, with drivers who are experienced. I took a ride in a silver ZR1, driven by a professional instructor pushing 11/10ths. The ACR viper inches in front of us was given the blue flag several times, but after 2 all out laps our tires ( stock ) became greasy and we had to back off. Intense!!!
We ran the full track 3.56 miles with 19 turns.