Thanks.
Yeah the there were two GT3 RS's, a white GT3, 4 Ferraris, 6 C6 Z06's, and a host of other really great cars I never captured. I heard the GTR, GT3 RS, and ACR Viper were clocked at 170+ on the oval. My buddy's Evo VIII (camera car) did about 140 on the outer rim.
It's absolutely amazing to be within 10ft of these machines blowing past you at 130+.