Folks did not understand your point because you did not make your point at all clear - your original post talked only of CarPlay, which is not the same thing as Bluetooth, though it may use Bluetooth. I don't have CarPlay in my car, though I do have BlueTooth (in the factory stereo), and Apple Maps does, indeed, track where I parked my car automatically. If you don't have and won't put Bluetooth in your keep (that's fine, it's your choice, nobody's trying to make you do that), how would you expect Apple Maps to be able to determine that you'd parked? Magic?