Boris Johnson was on top US telly programme The Late Show with David Letterman last night, plugging London and his latest book. During the chat Boris admitted that he now regrets saying he won't run for a third term as Mayor – perhaps since, as he admitted his chances of becoming Prime Minster are about as likely "as being reincarnated as an olive", he believes Mayor of London is the last high profile public role he'll hold. But a manifesto pledge is a manifesto pledge... Or, since he was born in New York, he might have a shot at US President.
For any Americans tempted to visit our great city by the Mayor's publicity, we feel it's only fair to warn you that air conditioning on 40% of the tube network won't be ready until 2016, Crossrail until 2018, if you want to use the cycle hire for free you'll have to buy a key and membership (though £1 for 24 hours casual use isn't to be sniffed at), and if you do get drunk and fall backwards off the New Bus for London platform someone will probably run you over.
Letterman also teased Boris over his famously scruffy image, asking "how long have you been cutting your own hair?". You can watch a clip without all the boring book plugging over on Digital Spy.