[Fester Chugabrew]

There may be advances in technology around the corner that make personal *ground* transportation over long distances a thing-used-rarely. Something akin to controlled electro-nuclear-magnetic flight. The energy is there. It’s just a matter of harnessing it. It is good to see people pursue alternatives to what we commonly call “fossil fuels,” if only because we are inherently curious, creative, and called to subdue this creation.

[Steve_Seattle]

"It is good to see people pursue alternatives to what we commonly call “fossil fuels,” if only because we are inherently curious, creative, and called to subdue this creation."

That's an intelligent point; too many people here remind me of people who said, 120 years ago, that the personal automobile was an impossible dream. The fact is that the day will come - maybe not in our lifetimes, but probably in the lifetimes of our children or grandchildren - when fossil fuels will become relatively scarce, hence expensive, and we will need an alternative.

[MaxMax]

Lithium may also be considered a fossil fuel.