Yes, this is a serious question. I know the Walmart shelves are packed with all sorts of different waxes, polymers, etc. that you apply to the paint of your car. I would just think, given modern technology, that car paints today have a great deal of protectant in them already? Is the world of waxes and other coatings a bunch of marketing? My son will be taking his black 4Runner to college in the fall, and it will be exposed to all of the natural elements, as well as some likely unnatural ones (sprinkler spray). Would some coat of something on his truck help repel these things?