Oh dear, that would spin me out, I did live in London for a couple of years. But I like my 5 min from work to home commute by motorbike, 30min push bike ride, or just for kicks, I'll take a 45km loop from work back to home opposite direction through a rural type setting.
Who said buy a motorbike to save on petrol!
I like the comparsion though, and when I did live in London, I commuted by push bike, I got really street wise savey, it was a buzz really, ducking and diving through the traffic.
Music concerts where high on the must do's, and generally we made the most of what cities have to offer, and the closeness to Europe...though was not into having my own motorbike then....bit of a shame really.