London's Eyes on Citywide Wi-Fi
"Commuters on the underground would then be able to access their iPhones and Blackberries to get online, providing there's enough elbow room present to actually work their phones.
The hotspots would be installed on platforms in the stations. However, Johnson acknowledges that achieving wireless Internet for the whole population of London will be an expensive affair, particularly when underground."
He's hopeful that this plan will be put in place in time for the 2012 Olympics.