yeah, I was gonna ask is this some big event or in the real world would it be horrifically cost prohibitive.
though to greenies, no prices is too much to pay not to use oil.
A lot of research is expensive. We will not know the real cost/benefit ratio until a practical use can be found for the technology.
I do not see this as a strictly “green” technology. Advancement in battery technology is always useful.
As I said in my post, an eye in the sky that can remain aloft almost indefinitely has some uses.