No, I don't know what you mean. Your logic is pretty flawed. If need to understand simply supply and demand economics.
The supply of available Nissan Z's will likely diminish from the halt of production and rebuilding of infrastructure at the Nissan plants.
From reading this article it seems Nissan is halting production in the short term
Toyota, Honda, Nissan Plants Shut Down After Earthquake And Tsunami Hit Japan – AltTransport: Your Guide to Smarter Ways of Getting Around
This will sharply impact the price of Z, as demand for the car will remain constant yet supply has dwindled down, meaning the prices will increases. This is already happening in South East Asia where imported Nissan cars are being priced higher.