My opinions only, no facts here:
OK, I will continue here with my evaluation of the 2 Circle-K white truck pics. Before getting into this, I wish to remark about possibilities that the widely-circulated white truck pics have been altered or enhanced, before their release to the public. Unfortunately, there is no quantitative method to prove whether the pics are original or not. I can only work with what is given to me. I have been troubled by how large, sharply-defined, and dark the rear-view mirror is in the 2 white truck Circle-K images. But, maybe there is something different about this mirror- it could be custom and not stock, or there could be something added to it (other than a pair of fuzzy dice!).
Anyway, I examined pictures of a 2011 Z71 Chevy from the same angle as the 2nd white truck Circle-K pic. I present here a possibility that the 2nd truck has the Z71 logo. A logo from a real Z71 Chevy has been scaled to the same size as the 2nd truck image. The possible fuzzy "Z" is in the proper place on the 2nd white truck Circle-K image.
LE said they enhanced the pictures before releasing them to the public.