Isn't there city-wide wireless in the U.S? (Score 1)

Here in sydney, a wireless broadband provider has just started up http://www.unwired.com.au/ and seems to cover most of the city and the 'burbs (Pretty impressive when you think that Sydney, in area, is one of the larger cities in the world). Though it isn't TRUE wireless ie. if you change position very quickly you have to log back on - not much good on public transport then (unless you're in a traffic jam :P )