I agree, even my "car guy" friends don't know much (or any about the 370z). I have to explain that it's under $30k runs 13.3s, lower, wider, shorter, lighter etc.
Also I have only seen ONE 370z on the road. I'm in grad school at U of Illinois, so the combination of not driving too much (I have a well recognized RSX-S with 11k into it) and not being in a particularly urban area can explain some of the rarity.
Actually, I correct myself. I did see more 370's, BUT that was this summer in Japan. I also saw a heavily modified black R34 parked in front of Tokyo Tower, but that's a whole other story