Comment: Re:Gasoline-like energy density (Score 1) 582
All of that energy is currently being generated by the internal combustion engines in vehicles from the petroleum-derived fuels.
In essence, they already create a decentralized energy grid, utilized only for transportation, complete with supply and distribution infrastructure which is several times larger in magnitude in overall energy consumption than the primary grid.
That demand HAS to make its way onto the primary grid eventually, or else we'll hit a brick wall at high speed (pun intended) when we suddenly realize that the global stockpiles of oil have dried up.