I think by the looks of this photo the inside condensation formed and then dripped down into dash top. This probably happened as the real subzero temps froze literally the windshield outside and then in while the heep was still warm!
Well The carpets are all dry. What I did find was one water bottle cracked and well frozen. Also one Windex bottle in the front that was solid ice LOL!
I did fire up the heep no problem and only let it run for about a minute.
I used a hair dryer to warm slowly the frozen windshield inside, and wiped it dry.
I think I need a ticket to Hawaii!