Traveling the world always sounds like an intriguing idea. What about traveling the world in a salvage school bus that runs purely on french-fry fat? Starting his journey on September 19, 2009 Andy Pag has covered 3,000 miles in part of the Biotruck Expedition. Pag, an environmental activist, is attempting to travel the world while emitting less than two tons of carbon dioxide emissions. One of the downfalls of traveling on a bus fueled by fat is the smell, but what can you expect when you are using rubbish as fuel?