there should be a link somewhere on the website that takes you to a page of all the new cars and tracks, like a little download section for all the finished awesomeness that you people create.
We could just use the rating system if you are concerd about quality. You don't want to make people feel as-if their creations aren't good enough. If they stopped modeling just because of that it would be a great shame seeing as they could become really good. (I worded that poorly but i think you will understand what i mean)
^ THIS ^ I feel the RoR repository is mostly filled with junk I don't want, even if the content is popular. Maybe there can be a quality rating and a separate "good effort" rating, haha.