I'm usually disappointed with most user-made video game content. Usually, if gamers are asked to make some art for a game, you get dicks and swastikas as far as the eye can see. But I checked Forza Motorsport 4's custom paint jobs section today and couldn't find any such thing in design section.
Here are 20 of the more interesting paint jobs I found in the community section of Forza 4, which came out just today. Some people obviously had early access. Doesn't matter. What they've pulled together is impressive!