Ford's new chocolate-inspired plastic, made with air bubbles

(PhysOrg.com) -- Plastic is often used in vehicles, when the designs demand a lower weight on the vehicle, in order to increase vehicle speed or fuel efficiency. Current plastics only meet those goals to a limited degree. While plastic is lighter than metal, it is not as light as some designers would like. That is why car companies are working on lighter plastics, by making them with very small holes.