Talk about energy efficient, this boat will use only sun, wind, and hydrogen for power to last six years as it travels around the world. Called the "Energy Observer," the eco-friendly vessel is a converted multi-hull race boat powered by solar panels, wind turbines, and a hydrogen fuel cell system. The boat's captains, Jerome Delafosse, a professional diver and documentarian, and Victorien Erussard, offshore racer and Merchant navy officer, both from France, are preparing now to embark on this long, experimental journey. "In the past, man explored to conquer territories and to appropriate wealth. With Energy Observer, we want to explore to discover and share solutions for a cleaner future," said Delafosse on their website.

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