Ideas out of Los Alamos
Scientists Would Turn Greenhouse Gas Into Gasoline - New York Times:
"Gasoline, it turns out, is an almost ideal fuel (except that it produces 19.4 pounds of carbon dioxide per gallon). It is easily transported, and it generates more energy per volume than most alternatives. If it can be made out of carbon dioxide in the air, the Los Alamos concept may mean there is little reason to switch, after all. The concept can also be adapted for jet fuel; for jetliners, neither hydrogen nor batteries seem plausible alternatives."
Portable power vs. central power.