Vehicles in the future, perhaps a great many in the very near future, will be powered by hydrogen fuel cells. The reason: These are zero emissions vehicles. The only thing that comes out of their tailpipes is water or water vapor.
So where does the hydrogen come from? Most these days comes from natural gas. The problem here is that to get this hydrogen feedstock increasingly requires fracking, which has its own serious polluting drawbacks.
But fortunately there are alternative ways to produce hydrogen that are becoming available. In Germany excess power from wind turbines, power not needed to feed into the electricity grid, is being used to split water into its component hydrogen and oxygen parts. In California, these is a pilot project to use excess solar energy not feed into the electricity grid to do the same thing. Still another approach coming into view is to add carbon to solar-split hydrogen to make methane (aka natural gas) without the fracking pollution drawback.
The first mass produced hydrogen fuel cell powered cars are now starting to be sold by Toyota, Other car makers are expected to follow suit shortly. The future of transportation is about to arrive.
(The latest book from the author of this piece is titled Gorilla Warfare Against The Bureaucratic State—Confessions of a Lefty Libertarian)