I honestly don't think dogs have the mental capacity to wonder such a question. Even wondering in general takes a bit of mental skill. Working out thoughts, thinking of answers.

I took my dog into a walk in freezer a long time ago (gas store had a walk in beer selection) my dog took no more of it at all. I think their thought process would be something along the lines of, "OMG, I smell food! Weird, it got a bit cold... I smell food over there!!"

Lost in thought, or trying to find first gear?

I have a black lab who, I swear, has no one behind the wheel sometimes.