I doubt they will really test the P5. It is their show vehicle they will keep beautiful to keep on tour. I suspect he E vehicles will be ugly and not even painted.I do agree that this is a valid point. Some actual, concrete results of real testing would go a long toward establishing some confidence. Even if it's "Our current prototype tests demonstrate 80 mpg, but we are still optimizing, and are confident we will get 84 mpg", that's a lot better than "our current computer prediction shows we should be able to get 80 mpg".
I'm wondering if they will really test the P5, or if they will wait until they get the Es running to do it.