Has anyone noticed the triple decker bus that is (today at least) parked on the site of the former roundabout at the south side of Westminster bridge? A very wierd and wonderful thing indeed. And I swear I wasn't on anything when I saw it. Not quite sure how its staying upright, to be honest, as its far too tall to be of practical use. It looks pretty ancient too. Could it be a promo piece from the new gallery in nearby County Hall?