The Melbourne-to-Sydney air route is the worlds fourth busiest4. There is little scope within the next decade or so that airplanes will travel with zero emissions even biofuel has plenty of complications. Roads are already congested despite the fact that for more time distances road travel just isnt a superb various to aviation. Auto journey can substitute aviation for mid-distance journey however it needs a lot of hours to journey by car from say Canberra to Sydney or from Canberra to...
