I can imagine a much scarier scenario...

You use whatever app to summon a car. You give it a destination, and instead, the car makes a detour to the local police station. the address you entered is in a higher crime rate locality, and therefore the car owner approved further "screening". So the car goes to the local police station for a routine search of the car (authorized by car owner) and a dog search of you...

That kind of future is one I am worried about.