Eco Factor: Zero-emission Smart ForTwo harnesses solar energy. After a request from Automotive Engineer magazine to design an all-electric small car, the designers over at Lotus tried to develop the most popular small two-seater car, the Smart ForTwo, which could run on an all-electric engine. The concept car developed by Lotus carries a 37KW motor that gets powered by a lithium-ion battery pack. The Li-ion battery pack gets some juice from the car’s roof mounted solar panels and offers

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Eco Cars: Lotus designs an all-electric Smart ForTwo powered by solar energy