War-riding-in-a-bus (Score 1)

I was once riding in a bus on a school trip to The Royal Institution in London (Some 50-60 miles away). On the way I left KisMAC (Mac OS X equivalent of kismet) running. It found over 250 APs on the way and a less on the way back. I don't remember any precise figure but I think it was about half open, half encrypted. Thought: How good is the stuff that allows a wireless network to have multiple wireless APs for one network? It would be clever if, in heavily wified areas, people just made one big network with a few big fat internet connections. And, better still, I could see wireless APs becoming their own internet in themselves. I mean, the internet at the moment is just lots of computers connected together with a load of clever routing stuff. Can't similar stuff be done with wireless with a few bigger, better and more powerful APs that would have the big pipes to the internet?