Woody Harrelson and a group of friends take a road trip on a bio-fueled bus to demonstrate ways to be environmentally responsible and visit people who live by that principle.Woody Harrelson and a group of friends take a road trip on a bio-fueled bus to demonstrate ways to be environmentally responsible and visit people who live by that principle.Woody Harrelson and a group of friends take a road trip on a bio-fueled bus to demonstrate ways to be environmentally responsible and visit people who live by that principle.