After what I said in the post below, here are a couple more dubious surveys:
Now, I have little problem in believing that sprawling* suburbs are good for you in all sorts of ways - after all, I live in one - but fixing congestion? well, that’s quite a different proposition. Central London has been congested for a couple of hundred years. Bearing in mind that in that time its governors have ranged from extreme liberals to extreme socialists you would have thought that if there was an easy solution ie not congestion charging, they would have found it by now.
* Whoops! Banned word (warning: short).