I have some suggestions:
1. Following on with what bugsoup was saying, I think at some point we will need some sort of search for the members rides section. Its growing ever bigger. It will also get to the point where the list will get too big to display at once.
2. I think it would be better if, rather than uploading 4 pictures for the different parts of your car, if you could just upload up to 4 pictures of anything. Also, I don't really like the 'sorry no image' pictures. Just plain text would be better, if there are no images to display at all. Display the 'first' image in the list maybe. I understand there is probobly a bit more coding to do these ideas though!
Otherwise germanlook.com really kicks arse!