Principle photography has begun on “Fastest," a feature documentary about the world of MotoGP racing and star Valentino Rossi, with Paul Taublieb serving as Producer and Media X International as production company.   The sequel to the critical and commercial success to 2004’s “Faster,” “Fastest” puts director Mark Neale back behind the camera and is slated to debut at the 2011 Cannes Film Festival, with Ewan McGregor returning as narrator.