I think that might be JB's eval car.
Some of the other photos suggest that temperature sensors have been taped to various parts of the car, and probably some sort of data collection unit monitors them as the car is put through its' paces.
Not exactly the most flattering condition for the car at that time but it shows that they are serious about durability testing.
For some reason the Tesla logos appear to be missing from the wheels and hood.
I wonder if some souvenir seekers made off with them.