Quote:
Originally Posted by glacialmoraine
Another option on defrosting, is to roll down the windows. Frost is caused by the inside of the car being warmer and moister than the outside. If you roll down all the windows, the temperature and humidity equalize, and no more frost. I drove a VW van in the winter for years with no heat, I just opened the vent windows and directed cold air at the windshield, and dressed really warm. Since the MR2 doesn't have vent windows you would have to roll down the main windows to equalize temp at the windshield. brr.
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you could install some ducts that would direct outside air at the inside of the windshield. If you shaped them right you should be able to avoid water spray on rainy days.