As I said, &quot;more car use&quot; - I.e. More passenger miles - but you can still paradoxically have less traffic volume, as journies become more efficient but more importantly as <i>freight</i> becomes more efficient.<p>Re: the personal space bit... Not so sure. Many of the &quot;younger&quot; generation spurn car ownership so have no sunk costs, no personal space to lose. For the rest, it&#x27;s going to be a question of marginal utility - and the fact that many car owners will get a train preferably where possible suggests that there is a case for non-ownership.<p>I mean, ten years ago your man on the street would have found it inconceivable that they would own no movies, no albums, that they&#x27;d just rent them - yet here we are.<p>Behaviour changes quickly when it starts, but slowly enough that you don&#x27;t notice the change until after the event.