The American Stig, meaning the one heating up the track on Top Gear USA, had a little fun in the Hennessey ZR750 Corvette ZR1. You’re not familiar with it? ZR750 stands for 755 bhp at 6,600 rpm and 728 lb-ft torque at 4,700 rpm, which is exactly how much madness this ZR1 is able to generate. Even if we can't see inside Stig's helmet, we're pretty sure he had a big smile off the starting line.