Let us accept that the day of fossil fuels is over.  Of course those firm in that belief will be quite understanding of the empty store shelves because there will be no fossil fuel used in flying in food or even bringing it in by ship or barge.  Unless, of course, somebody has cornered the market on sailing ships.  These are the people who are already reading up on how to forage for food as they begin the long, fossil-fuel free trek to the promised lands - Oregon and California.  Better to start now, though.  Winter WILL be back.  Oh....don't forget to bring an extra pair of shoes. Perhaps something more substantial than fashionable spike heels and sandals.  Ready?  Steady?  GO!