One big problem is this plane has never made it off the ground. The only thing they have that’s flown is a one third size drone.
I would guess extensive testing of their prototype drone proved very reliable. Otherwise, I don’t think Eviation would have ever never gone forward.
Btw, according to Eviation their Alice commuter jet flies in 2019.
“”After winning acclaim last October at a Wall Street Journal-branded global technology conference in Laguna Beach, California, Eviation received what Bar-Yohay calls “a tsunami of interest and investment.” He expects the full-size Alice to be test-flown—with a pilot onboard—in 2019.””
https://www.airspacemag.com/flight-today/electricity-in-the-air-180969510/