- Travel by flying is mainly a choice : a whim : avoidable : part of the mass-tourism frenzy with associate bragging rights.
- Travel by motor vehicle is now so deeply embedded in the way we live that it will probably take a generation or two to change peoples thinking/planning and the way we live i.e. (motorised personal travel as my right and ignore the disbenefits ) OR ( I have to do it, because I live here and work there ). . . .
One part of the overall problem is that travel is hugely energy intensive. Where will all the energy come from to replace fossil-fuel ?
( . . . . particularly if we follow this trend of driving ever larger&heavier vehicles [ more bragging rights