https://www.cnet.com/roadshow/news/ford-postmates-fake-self-driving-delivery-vans/

In a blog post on Medium, Ford said that it has deployed its "self-driving" delivery vehicles to Miami and Miami Beach. In conjunction with Postmates, the automaker wants to see how regular Joes and Janes react to a delivery that arrives in an autonomous vehicle, even if the one in question technically isn't.

No, you're not allowed to put an annoying child inside the locker after you retrieve your parcel, no matter how much you might want to.