Earlier quoted context omitted.
Probably temporarily. It'll likely cross a point where more synthetic production methods reach economic viability. The field requires such a great energy density that I suspect only a remarkable breakthrough in energy density for weight would allow a fully electric solution. Hydrogen is also likely out as the storage cells would be under unimaginable stresses. In the long term it might actually incentivize the creati…
Unless someone figures out how to bulldoze the Rocky mountain range, high speed rail as a replacement for coast to coast air travel is a non starter.
A route roughly following the I-80 corridor would top out somewhere below 9000 ft[1]. The California high speed rail is already being designed for what I would guess are similar elevations (and perhaps steeper grades)[2].
You could also route through southern Arizona and New Mexico, completely avoiding significant mountains.
1. https://en.wikipedia.org/wiki/Interstate_80#Wyoming
2. http://articles.latimes.com/2012/nov/12/local/la-me-bullet-m...