When will it be finished?
Source: geekwire
Although it has been in development for six years it was in development for a year before the official launch. However, progress has been rapid. Within two years of starting building in 2015 they were able to show it off to the world in May 2017 when it was wheeled out of its hangar for fueling tests, but it won’t be too long before we see it in the air…