Flying a plane in a straight line is much simpler than driving on a road. There is a reason why most aircraft accidents happen during landing or takeoff, once a

Flying a plane in a straight line is much simpler than driving on a road. There is a reason why most aircraft accidents happen during landing or takeoff, once at cruise altitude there is very little that could suddenly go wrong. That's why a relatively simple mechanism can autopilot a plane, but the same mechanism will crash a car in an instant.