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The electric Tesla Roadster can be powered by wind, solar, hydro, coal or nuclear sources

Breath of fresh air. Electricity may be just one answer, but it's an especially desirable one. As the universal currency of energy, it can be generated from coal, solar, wind, hydro, and nuclear sources — or a combination of all of them. No matter how or when the world changes, electricity can adapt, easily and safely. See more environmental benefits.