Build ten wild off-road vehicles and other machines while learning about belt drives, wheels, and tank treads. A battery-powered motor box powers the models. Construct a dune racer with tank treads that rambles over rough terrain. Make a four-wheel-drive A.T.V. with a belt drive and high-grip tires. Build a scrambling stair-walking machine. Set up a fun conveyer belt and make models of a belt sander and bandsaw. Assemble a snow scooter with a three-gear tread. In addition, construct models of a snowcat plow and futuristic truck. A 40-page manual guides your model building and experiments with step-by-step illustrated instructions.