Its definatly too fast. For the GTR to achive a 7:29, it took a miracle lap, plus its been around the ring hundreads of times according to Nissan. The ACR ran a 7:22 on its 4th try.. with room for improvment. Simple fact is its generating 1,000 pounds of downforce meaning its just unstoppable..it handles alot more like a ALMS car then a street car
Anyway that video is pretty weird. Im going to stand by nissans claims, as i dont think a company would flatout lie about a time. I think this GTR video has been edited somehow...reguardless the viper wins by a long shot