That accolade belongs to Acciona, a Spanish company which concentrates on renewable energy. It took five years to develop its own custom-built, battery-powered car to compete in the Dakar Rally. After two failed attempts, this year it conquered what is regarded as one of the most grueling and downright dangerous endurance rallies in the world when other experienced drivers couldn’t
, successfully completing the 5,600 mile trek through Argentina, Bolivia and Paraguay. 18,000 vehicles have participated in the Dakar Rally since it began, but Acciona’s entry is the first to compete without emitting any carbon dioxide.