umm you are mad that another human being has the same car as you???? serious? If it really bothers you that much and you need to be all unique -buy some wheels / get some body work done and make him all jealous
I will say this however - if you grew that jealous of your boss / neighbor / whatever for potentially getting the same car as you - how jealous are you of all the other people here w/ better or equal Zs? Makes me think that if we all met in real life - most of us would be hating on each others cars lol...
I honestly say - the more the merrier - more Zs out there means more R&D / means cheaper parts and better service. And please remember - its starting to get to the point where college kids can start buying 370z's used - so you will see a lot more Zs around.