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I agree with you. The second video in the series "Inside Tesla" is awesome!!!! I liked how the robots worked to build the S with the utmost precision. TM, thanks for taking us into the heart of the factory as the an "S" goes from sheet metal to a full road car.
It appears that the 'test track' would be in the foreground on the left side of the photo. My guess is the profile of this picture makes horizontal roads hard to pick out.