Interesting TED Talk on "Walkable Cities"
Watched this very interesting TED talk on the "urban sprawl"; it's American focused but raises many interesting points about car use vs walking or cycling.
One of the very interesting points it raises is that emopowering people to not rely on their cars gives them more disposable income which they tend to spend in local businesses.
Well worth spending 17 minutes watching.
*Edited to add link*