I just joined a local camera club and my first outing with them was to an auto salvage yard. I had no clue all the interesting shapes, colors, and textures that could be found in one place. If you have one near by then you have to try it - dress accordingly, especially if you're like me and tend to get on the ground for shots.
I added a contact sheet of some shots
here.
BTW - I created an Adobe Web Gallery but I'm not sure how to share it. If anyone knows, please pm me. Thanks.