In the UK and most other European countries, the majority of the population live within a mile or two of most of the 'basic' facilities (shops, post office, public transport etc) that they need to access frequently. And some workers live similarly close to their workplace too. Walking to and from them is usually easy and safe, economical, and desirable from an exercise viewpoint. My impression is that the US is typically very different in that these 'local' trips often involve significantly longer distances and may be difficult or unsafe for walking - so the automobile reigns supreme. That said, the typical American shopping mall or complex seems to require a lot of legwork if to be explored fully - or does every shopper tend to move their car around the estate? (It is some years since I was last in the US (Florida) and I remember the distances needed to reach other places in the same neighbourhood, but not what the drill was when visiting several stores in one complex.)