Well put. Something like hyperloop may in fact be efficient and affordable in terms of energy consumption. At this point though I'd say that asking "where first" puts the cart before the horse. There are a number of critics of the hyperloop idea. It is not proven to be what you imagine. If somebody proposed building one of these in my part of the country I'd say the feasibility questions need a whole lot more attention first.

Of course there's nothing but critics when it comes to any new idea. So I'm not saying that it shouldn't be studied and evaluated. I'm just saying that process has barely begun and it's not time yet to get real concerned about how it might playout in a specfic area.