Every toy drone will refuse to fly into protected airspace. Theres no reason a car made in the past 10 years should be able to go 50 mph and beyond in a city.
A more meaningful comparison would be with an airplane (small Cessna, big airliner, whatever). Do you think these airplanes should automatically steer away from protected airspaces?
Besides, modern planes have tons of automation that can take control of it, from simple things like preventing it from stalling to more complicated things like avoiding flights into terrain or automatically landing the aircraft at the nearest airfield.