Famous Environmentalists Quiz by Chris FrantzRead more about Earth Day. Question 1 (out of 10): Shaun, Teresa, Marty, Gus—and don't forget Sparky—traveled across the U.S. on their television series Coolfuel USA Roadtrip. What fuel was not used by the team? Sugar Garbage Gasoline More Quizzes from Factmonster: Try another People Quiz ! Quiz Archive FEN Learning is part of Sandbox Networks, a millennial learning company, reaching hundreds of millions of people across the globe.