I enjoy shooting properly focused and exposed I-5 photos with a nice SLR, but sometimes you just get tired of stuff like sharpness and non-infinite depth-of-field in your photographs, know what I'm saying? Sure you do. That's when you reach for your homemade pinhole camera, put it in a box of small-block Chevy valves and springs, and take a 45-minute exposure. The cool thing about a pinhole camera is that you can shoot objects 1/4" from the "lens," which is fun with car parts.