All glory may be fleeting, but most of us wouldn't count fleeting as very glorious. But greenfleeting, the art of maximizing the efficiency of a fleet of vehicles, can pick up some big ecological gains if done right. Greenfleeting can mean choosing hybrid or electric cars and trucks, tweaking the driving tactics of employees, or otherwise cutting out miles driven. This visually delicious video, produced for the Environmental Defense Fund, paints a picture of how small changes to a fleet's behavior can yield big results.(Click through for the vid...)