Well, I don't see how Bugatti's head guy is going to stay around long if this turns out to be another case where it costs them 5 times what they sell it for to make it. Then again, perhaps that is why they are making this car, so that all the R&D they put into the Veyron isn't wasted.
No complaints from me as a car person though. I say if you want to build it, then do it.