Probably more of a question of when the FAA will approve such aircraft. It looks like they've been building prototypes since 2011 so I'm sure the tech is pretty

Probably more of a question of when the FAA will approve such aircraft. It looks like they've been building prototypes since 2011 so I'm sure the tech is pretty solid at this point. Boeing does have experience building UAVs and I'm sure this isn't that technically different. They likely wouldn't be doing any advanced flying like going between buildings or landing anywhere but an airport.