London's new Routemaster bus

Mayor of London Boris Johnson poses with artists' impressions of a new Routemaster bus in action Photograph: Oli Scarff/Getty Images Photograph: Oli Scarff/guardian.co.uk The Routemaster replacement will use hybrid green technology to cut emissions Photograph: TFL Photograph: guardian.co.uk A concept picture of the new bus Photograph: TFL Photograph: guardian.co.uk A concept picture of the new bus Photograph: TFL Photograph: guardian.co.uk