I agree that aircraft autopilot/other basic applications of control theory are not usually considered "AI," nor were they ever — control theory has its roots in

I agree that aircraft autopilot/other basic applications of control theory are not usually considered "AI," nor were they ever — control theory has its roots in mechanical governors. Certain adaptive cruise control systems certainly are considered AI (e.g. ones that utilize cameras for emergency braking or lane-keep assist). The line can be fuzzy — for instance, are solvers of optimization problems in operations research "AI"? If you told people in the 1930s that computers would be used in a decade by shipping companies to optimally schedule and route packages or by militaries to organize wartime logistics at a massive scale, many would certainly have considered that some form of intelligence.