The Zephyr-6 Opening A Lot Of Possibilities

From The Digital Aviator:

A UK-built solar-powered plane has set an unofficial world endurance record for a flight by an unmanned aircraft. The Zephyr-6, as it is known, stayed aloft for more than three days, running through the night on batteries it had recharged in sunlight.

I guessed everyone has heard or read by now about the successful demonstration of the Zephyr-6 recently.

Not just that this unmanned aircraft has stayed in the air longer than any other aircraft it did so without depending on fuel.

Is there an option for a new era in which solar energy would decrease flight costs and increase efficiency in similar aircrafts? I certainly hope so.