I measure it by "Oh Wow!"'s per lunch outing as I don't really race the Zed (yet)...
The Z gets, on average, three more Oh Wow's per lunch trip than my co-worker's 392 Challenger every time... And heaven help me if someone pulls up next to the Z and asks me about it; that puts him in a funk all day.
I chalk it up to my Nismo being the only one I've ever seen in east Denver, and Challengers being present at nearly every 4-way stop out here. And I see similar results between the Z and another co-worker's C63 AMG - he'd fair better though if we had a larger sample size, but the AMG lives in the shop...
Really, the only car here at work that beats the Z in wow-factor is my CFO's dropped and blown 1968 Camaro - but that's not really a fair comparison.
