Hi Soulsaver,
I'd seen the type of bus, but not one with an accordion vinyl motif on the side. I thought it was a pretty clever take on the bellows, which is the name given to the component "bendy" section of the bus. They were withdrawn from London at the end of 2011, as they were not really suitable for traffic conditions there. My company in Scotland had some but not at the depot where I worked. The rear section automatically follows the path taken by the front, but whilst the bus is in its "bent" state the drivers have no view of the rear extremities at all, and in a place like London where there are lot of bikes sharing the roadway that's not an ideal situation.