Mike Brzozowski, a User Experience Researcher working on Google+, shared on Google+ a picture of a cargo truck with the Google name on it. It seems legit but hard to tell if it is photoshop'ed.
I would not be surprised if Google owns cargo trucks, at their size. But weird to see Google, Inc., the "Inc." part and the Google logo being in black and not color.
That being said, it seems like a legit truck.
This post is part of our daily Search Photo of the Day column, where we find fun and interesting photos related to the search industry and share them with our readers.