The future of fuel is hydrogen. How it is to be generated, stored, and transmitted is the question. But the final answer will surely be that gasoline will be totally diverted into commodity plastic uses and that only hydrogen will be burned for fuel, in planes, trains, ships, and automobiles.
With only water as a by-product, it also has the side benefit of shutting up all of those doleful ecomentalists. Thank the Lord. No doubt they'll find something else to whine about, but we'll cross that bridge when we get to it.
Here is the review of the Clarity from the Daily Labourgraph.
And here is the review of the Clarity from Top Gear, with James May: