Because of a 'grandfather clause', the strict emission standards only apply to new cars.
(..) Go, go! Follow me! Our guys call it a Great Leonopteryx. It is Toruk. Last Shadow. Yeah, right. It's the last one you ever see. My grandfather's grandfather was Toruk Macto. Rider of Last Shadow. He rode this? Toruk chose him. It has only happened five times since the time of the First Songs. (..)2009 Avatar