When you park outside,
your car can take at least ten minutes to heat up enough for
the defrost to melt frost from your windshield. And if you
don't have a windshield scraper, it can be a tedious task
of using a CD case or credit card to remove enough frost so
you can safely drive. But you can actually pretreat your windshield
with a homemade solution so that the frost won't form in the
first place.
In a clean spray
bottle, combine three parts plain white vinegar with one part
water. Spray the outside of each window you do not want frost
forming on. You will need to repeat this every 2 or so weeks,
so you can keep your bottle in your trunk so you can spray
whenever you need it.
Unfortunately,
if it snows, it won't keep the snow off!