Quote:
Originally Posted by MarkC
The condensation forms on the outside of the cold window, where it's more humid than inside the car (because the AC is on).
I'm in SC and noticed this happening to my car a lot lately. I've been trying to run the vents manually in floor and dash mode, which does help some, but the windshield still gets fogged up eventually.
Looks like I'll be buying a mouse pad soon 
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While that is a possibility I would think it would evaporate off the bottom. In any event my windshield completely fogged up and by the grace of god I did not have an accident before coming to a stop so any other events are inconsequential. For me that was a very scary event and the car was only 2 months old. I made a rubber cover that covers half of the vent so air can still come out if I ever need a defroster.