There's always been too much at stake in the airline industry to allow a lot of room for human error. Combined with the huge leaps that fly-by-wire planes have made in the last few decades, that made for some very powerful incentives on everyone's part (engineers, regulators, and companies) to advance autopilot as far as they possibly could.
Take, for example, Qantas flight 32, an A380 that was successfully landed after one of the engines more or less blew up, damaging several other systems. Truly pilotless operation would require automated systems that could do as well --- and hopefully better than the pilots of Air France 447, the transatlantic flight that was lost due to recoverable pilot error.
Then again, human pilots are fallible, and lots of crashes would be avoided if they paid more attention to instruments and less to instinct (where's that horizon again?), so maybe programming planes to just blindly follow the instruments would result in a net reduction in crashes.
This relevant link gets posted a lot, but is worth posting again: http://www.salon.com/2011/08/04/can_jetliners_fly_themselves...
And what do terms like “automatic” and “autopilot” mean, anyway? Autopilot is simply a tool, along with many other tools available to the crew. You still need to tell it what to do, how to do it and when to do it. And although it frees the pilot from having to have his or her hands physically on the control wheel (or sidestick) or thrust levers, this is only a fraction of what the act of “flying” entails. The autopilot is not flying the plane. The crew is flying the plane, through the autoflight system.
That in no way says "keeps going without operator intervention" to me.
Like a need to land the plane in Hudson River when the plane hits a flock of geese, or emergencies when vital system monitoring tools become inaccessible.
A large portion of FAA's required reading for pilots http://www.faa.gov/library/manuals/aviation/pilot_handbook/ is dealing with various failures of subsystems.
So I don't think that Google is working on 'pilotless planes'.
Yes, remotely piloted or autonomous flying drones could never work. There must be 2 pilots flying a bird, that will never change, even the Air Force wouldn't be that crazy.
But honestly, give it twenty years.
But honestly, don't you see the solution here? You have a room full of pilots in Tulsa Oklahoma (or wherever) or are providing manual intervention when necessary. Just like how we manage millitary drones today.