I would love something like this for parking, especially if it could be semi-automated. Push a button, drone flies up and does a survey of the parking lot. It then finds a space and "squats" it for you while you drive there on the ground.
I even thought of this idea like 10 years ago, when trying to come up with random ideas for fictitious gov't technology programs while bored at work. I think the name we coined was "OPLSS" (pronounced "Hopeless"), for "Objective Parking Lot Survey System".
But, just like many superpowers we'd all love to have, this sort of thing is *only* useful if you're the only one who has it. If everyone had this capability, it would cause far more problems than it would solve.