I say the machine should always be easily overridable, and the human always held responsible for the consequences of their operation of their machine. If you're driving a normal car, and you get in an accident, and the accident is your fault and not the fault of another driver, then it's you that pays the price of that accident one way or another. If the machine has some sort of "brain" like "full self-driving" or "driver assist", then that should be easily and instantly overridable and the human should always stay at least as aware of their surroundings as they would in a standard more traditional non-self-driving car and always be on the ready to take over control of the machine at a moment's notice. Same thing as with old-school "cruise control". You still gotta be ready to speed up or slow down under manual control, and / or disengage cruise mode entirely if necessary. No different for FSD IMHO.