Well I'm not a betting man, but I we will have to see. I really do doubt that they will be everywhere like a 350Z though.
I doubt it will be like 350Z, but I bet you will be able to see them all over the place like the C6Z06.
Nissan is on a roll right now making money on cars. The new philosophy is simple: Built cars that is cheap, made out of cheap parts, but with great performance. While at it, they have one of the healthiest margin in the car business.
Believe it or not, to built a Honda Civic or a Acura TL, the basic cost is almost the same. Both goes through the same steel chassis manufacturing process, and take about same amount of the time to put it together. In this case, what makes TL 15 grand more is the accessory inside the car. Navi, Leather, Power seats, etc that civic is lacking of. By having those extra features, the margin also increases.
In Nissan's case, they are charging twice the money for the GTR of a G37. Two turbos, 4 wheel drive, nicer interior. The GTR just don't cost Nissan that much more to produce than a G37.
When I look at and drove the GTR, doesn't matter how hard I look, it is just a beefed up G37 Cpe. I like the car, and I like the performance; at one point, I even considered owning one, until I drove it. I didn't like the sitting position, I didn't like the size of the entire car, and I definitely don't like to look over the high dash... Because it was like my bro's G35!!! I even go as far as admitting the fact that I "tried" to like the car.
At that price range, there is nothing faster, but I'm over speed. I like a little speed, but I do want certain "Honda" aspect in the car and Nissan did not make it any where like a Honda - Low dash, low hood line, great visibility, and most important of all, great drivability.
At the end of the day, if I can pick up a used one for $40 grand few years after the introduction year, I wouldn't mind, but I will never pay $70 grand a Nissan. The car doesn't feel special to me, regardless the fact that it will beat the crap out of my NSX on the road and track.