I support Aircav. You may say that this is no competition, but you also cannot deny the fact that people do compete somehow. Whatever reasons they have to sit down and make the skin, and post it around, they would have something in common: they wonder what people say about it. People come to see and compare. CMX viewer aliased shot certainly cannot compete with the rendered skin on an eye-catching sunset background. BUT!
Gunn is right too, those amazing pictures showcase LFS, no matter how wild editing has been done with them. Those pictures feed the addiction for LFS players and starts wondering of those who did not fall into the LiveForSpeed addiction trap, yet. Alltogether, I believe they help the promotion of this great game, too.
(I do realize that the wild yellow car, looking so damn hot on a render, will look just ugly greenish ingame, especially in daylight tracks - blue sky reflected on car will tint it away, but this is not officially the skins competition, so I don't mind)