Here are a few books from Amazon.com that can help you do your best at the pinewood derby. Be sure to check out our free plans, too (click here).
Pinewood Derby Speed Secrets: Design and Build the Ultimate Car
Pinewood Derby Designs and Patterns
How to Book: Formula for Building & Racing PineCars
Winning Pinewood Derby Secrets
Cub Scout Grand Prix Pinewood Derby Guidebook (Also includes Space Derby rockets and Sailboat Regatta)