Treat the earth well: it was not given to you by your parents, it was loaned to you by your children. We do not inherit the Earth from our Ancestors, we borrow it from our Children. ~ Ancient American Indian Proverb
You don't understand the situation.You underestimate the ability of technology to improve.
As has been touched on before -- where it is more efficent/cost effective to transport freight on rail we already do.We also may decide to transport more long distance freight by rail as it is more energy efficient.
As has been touched on before - long distance rail freight is already more effeicient and cheaper than trucks - people only move freight OTR on trips of ~1000 miles or more because of time constraints - something rail will never be able to match.As we get closer and closer to peak oil over the next couple of years, increased fuel prices will make long distance freight by rail more cost competitive with trucks.
You can’t haul 80,000 lbs. without using lots of energy; you bump up against laws of physics. Right now diesel provides that power and until there’s some new form of power you can tweak mileage up a bit with more efficient engines and aerodynamic truck design but as I said, you can’t defy laws of physics.