They are doing a one off while still building all their other products. It may be unrealistic for most Z owners but if you look at it, the Bugatti is unrealistic for 99.99% of the worlds population but that is where a lot of R&D is coming from and will in turn help make cars better and more powerful. The same goes for this project. Is everyone going to do this to there Z? NO! But a lot of new things are being tried which my come to an advantage to Z owners!