Margret Lindal Steinthorsdottir, marketing and quality manager for Hertz in Iceland, fills a hydrogen-powered car at a fuel station in Reykjavik December 19, 2007. Picture taken December 19, 2007. Come April, visitors to Europe's northernmost capital will get a taste of that future by taking whale-watching tours aboard the ship, or renting one of the world's first hydrogen-powered hire cars. REUTERS/Kristín Arna Bragadottir (ICELAND)