I think it will take more than 25 years, maybe never. fuel prices have dropped and large truck sales are up 25%. With 400 years of NG, we'll all be driving 3/4 tone pick up trucks and heating with the windows open in no time.
Militant Bluefish Jihadist

"Our leaders are stupid, they are stupid people," "It's just very, very sad" - Donald Trump 2011

"With all of the hysteria, all of the fear, all of the phony science, could it be that man-made global warming is the greatest hoax ever perpetrated on the American people? It sure sounds like it." - JAMES M. INHOFE

"Most meteorological research is funded by the federal government. And boy, if you want to get federal funding, you better not come out and say human-induced global warming is a hoax because you stand the chance of not getting funded." - WILLIAM GRAY

"The gods do not deduct from man's allotted span those hours spent in fishing" - Babylonian proverb