Dear 001,
I have concluded the car I photographed is one of two possible cars. It is either a 2007 Altima utilizing the "Teana" shell from the Australian model Altima(http://www.nissan.com.au/maxima/ ) during testing. Or second, they are developing a new model for the U.S. based upon the Teana.
The car was only left alone for a brief moment while its test driver ran into a store to grab a snack. During that time I took the two pictures and was preparing a shot of the interior when he returned and prevented me from doing so.
Needless to say he wasn't to happy, and asked me not to take any more pictures. The rear of the car was not badged at all. What tipped me off that it was a Nissan was that although the Nissan badge had been removed from the front of the car, the outline of the Nissan logo still was still present in the molded grill. The interior of the vehicle has been converted to left-side drive and is extremely similar to the Maxima, therefore confirming in my mind that it was in fact a Nissan product.
The pictures were shot from a camera phone and are of less than 1 megapixel resolution.
Happy holidays,
T. Bray