Will someone please tell me the best and easiest way to remove swirls marks that are very visible in dark colored cars and trucks? My mom has a black convertible and I have a medium red pearl metallic truck and both have swirl marks that I want to remove. When I posted I should have said the swirl marks are from not correctly washing the vehicles. I was taught to always use a quality wash mitt and go only in one direction not in a circular direction. Thanks in advance!