There are a few ways that you can remove car polish, but the easiest way is to use a polishing cloth. You can purchase these at most auto parts stores and they will come with instructions on how to use them. Simply rub the cloth over the area that you want to remove the polish from and it should come right off. If you find that the cloth is not removing all of the polish, you can try using a little bit of rubbing alcohol on a cotton ball. Rub the cotton ball over the area and then wipe it off with a clean cloth. This should remove any remaining polish.