Even as we post this, "seven of the world's most highly-regarded graffiti artists" are painting a replica subway car in Manhattan. Is it a celebration of art? A validation of the importance of tagging? A nod to New York's storied history of graffiti? Sure! Most importantly, it's also a promotion for some new line of Adidas shoes. We sent our Richard Blakeley to the scene, where he spoke with graffiti artist Kiante.