Many quadcopters don't even include controls. Instead, they have an app you can install on your phone to control it.
Manual control will always be a necessary option. As I've pointed out, if an angry mob is trying to kill you, you need the ability to over-ride the vehicle and run people over. More commonly there will be instances where sensors are fooled into thinking something isn't safe to proceed, but a human will have to over-ride the sensors. Perhaps there will be a phone app that allows you to take control of the vehicle in emergency situations. Steer by holding the phone like a steering wheel and use the accelerometers to provide the input. Tilt forward for acceleration and backward for braking?
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