One simple question please.
What happens to the LCC business model when World oil prices start racing back up to over $100 a barrel? One only has to read some of the reports by oil futures traders and they predict it could climb to over $200 a barrel, what happens to every facet of the transport industry then?
Extinction
Or H20 powered engines will prevail, cold fusion will magically appear for power generation and we will learn that we have been exploring the galaxy for decades with field generating engines invented by the NAZI's in WW2.
One can only dream.