Eddy Moretti goes to the home of Josh Tickell and his fiancé Rebecca Harrell to discuss the slow rise and drastic fall of the green-movement they helmed. Along the way, we learn some of the science behind sustainable energy Josh and Rebecca picked up on the road. Josh Tickell is America's biodiesel guru. He introduced the concept to the US when he famously drove his "veggie-van" around the country, fueling it with used cooking oil. He wrote the first book on how-to-make-your-own biodiesel, and is wrapping up his 11-years-in-the-making documentary FUEL about his journey.