i dont have one either just in case you think that Canadian models are different

Mine is also a Canadian model.

So can we conclude that the 370z "doesn't" have the gas flapper?

I think so. I misspoke earlier in the thread when I said mine has one. Also, fyi, I looked at my wife's Murano and it doesn't have a flap either. So I think this is pretty normal for Nissan.

I ran out of gas yesterday and used a coke bottle to put gas in my car, leading me to believe there is no flipper. The gas poured right in.

Thanks everyone for confirming this.