Aside from using a car cover, waxing your car is the best protection you can provide for your paint. Provided you use a quality wax that does not contain an abrasive. A quality, carnauba wax can actually hide tiny swirl marks, and toweling scratches while increasing paint depth, clarity and color. Carnauba wax comes from the Brazilian plant, Copernica erifera, which is farmed for its vegetable-fat wax. It coats the leaves of the plant and swells when wet, allowing water to run into the root area. When dry, it’s pores open up allowing the plant, and your paint, to breath.
This is a companion discussion topic for the original entry at https://www.hagerty.com/articles-videos/articles/2006/07/05/paint-waxing-tip