Not surprisingly, this was a truly quick vehicle, capable of alarming speed. Like the CTS-V, there was more than enough power at idle to send the rear tires the way of the dodo. This was an entirely optional activity, though, as the power delivery and throttle response were quite smooth. In fact, we might argue that a sharper (or adjustable) throttle response could be fitted to make the ZL1 feel just a hair quicker off the line.
