"Peak travel in the US will lead naturally to changes in urban design as people reduce regular travel to increase leisure travel: 53%"

Could you elaborate on this some?

There are various processes underway that are already affecting urban, suburban, and exurban design...some of them are "style" and "trend", some of them are result of the cost:benefit experiment that the last 20-30 yrs of housing development has been (always is, to be fair), some a result of fear or gas prices or the viability of the airline industry.

I'm curious what you see coming out of the interplay of regular travel v. liesure travel...