Interior: Rear View Mirror
You use it every time you drive yet you probably neglect to clean it when you clean the rest of your car.
What you'll need.
This is a simple and very quick step. Get out your favorite streak less glass cleaner, apply it to your microfiber cloth and wipe from left to right and back. Voila! Now wasn't that simple? For added safety you may also apply an anti-fog product to it. When it's really cold out the rear view mirror is often the first thing to fog up.