How to make a cheap, lightweight, child-friendly ride-on car from scratch?
Plastic (or something like that) for the body or any light material that is easily shaped or molded using common tools/equipment. With functional steering wheel that allows left or right turn (How is this really implimented? And what type of material to use?). Pedal propelled...or anything green solution. Usable by a 1 to 3 year-old kid...like a prelude to the carting instructable.