http://www.thisislondon.co.uk/standard/article-23696341-details/For+sale%3A+City+runaround%2C+one+careful+owner/article.do?expand=true#StartComments

So the 521 and 507 are going to be turned into single deckers, so all the problems they were designed to alleiviate, will flare up again, namely road congestion and passenger congestion. GOOD ONE.