15: Clearing Frost Early
Nothing is worse than waking up late and rushing out the door only to be confronted by a frozen windshield. Every modern car has a window defroster, but their effectiveness of them can be minimal at best. This is especially true in an older, cheaper car where the defrosters were never that effective anyway (via Family Handyman).
But there is a trick that you can use that will work from time to time and make the morning rush a bit easier. Park your car towards the East where the sun rises. This will ensure that your windshield is hit by the first rays of sunshine. The result will be a car that is much easier to get into and get going in the morning.