Abstract
pico-EV is the competition of the technique of the small electric car that the students design, develop produce and evaluate by themselves. We use only 6 pieces of size AA rechargeable nickel hydride batteries as drive source. We developed the electric car produced by cardboard boxes to participate in the competition. The reason why we used the cardboard boxes is they are easy to recycle. Our car weighs about 10KG. We produced not only the body of the car but tires by cardboard boxes. In this report we explain the design of the cardboard boxes car and the process of its development.