Yep and then when the computer hangs up, or a lightning hits your plane and burn all the electronics, or the turbulence is so hi that the autopilot simply disco

Yep and then when the computer hangs up, or a lightning hits your plane and burn all the electronics, or the turbulence is so hi that the autopilot simply disconnects, or a sensor breaks in the middle of the flight and the flight computer throws erroneous predictions, or a software update introduces a bug that is active just in certain circumstances, etc... I think that eventually it will be possible but ( and I am talking of 30 million $ planes) actually there are simply to many failures too many times ( once a year is enough and I assure you that potentially dangerous failures happen far more often than that) to have a fully autonomous plane flying with people inside. Don't even start thinking of consumer grade planes. A robotic car could be made to Self stop whenever a failure happens, that is a luxury that planes don't have.