[Moonman62]

It is likely that a refined version of the supercapacitor will exceed lithium-ion batteries’ storage capacities in due course.

...

It’s more likely that this is the last we’ll ever hear of it.

[MaxMax]

Remember that LCD paper thin display technology way back when? It's gone too.
The problem with that Tech is the ability to Camo into any environment during the day.

(poof) Gone. Similar tech has also disappeared.