A little research on the internet can get you to land on a car wallpaper download web site. Any search engine will help you with that. These web sites may have hundreds of car desktop backgrounds that you can choose from. Just pick the one that appeals most to you and you're done. You will have the best digital car wallpaper ready to adorn your desktop. You may also have a look at the car dealer web sites. They usually have the car wallpaper section.