According to The Onion, presidential science adviser John Marburger discusses reducing US dependency of petroleum.
“It is the president’s hope that hydrogen fuel cells, nanotechnology, or the recycling of human beings into fuel will hold the key”
There are two caveats: Firstly the plan foresees freedom from fossil fuels by 4920, although the transhumanists will hope to still be around, long after we bioconservatives have died out. Secondly, dont believe everything you read on the web.
Who knows, someone may have perfected the molecular assembler by 4920 making concepts of energy, money and humanity irrelevant.