My take on travel i.e. flying, cruises etc. is the cost to do it is going to be so high that only the rich will be able to do it. So basically we will be going back in time. The passengers on the titanic were rich folks-something along those lines. I also think at some point oil becomes extremely expensive forcing us to use an Uber or Lyft if we really cant bike or walk. Cost to own wont make sense for anyone except the rich. Its all about dialing back the American middle class IMO.