Autoland works. But the pilot doesn't turn it on until the tower (other other communication if no tower) says okay, and since nobody else is in the way of course it won't hit anyone.

There is a second mode in some. There it broadcasts emergency, uncontrolled plane will land, get of my way as I won't get out of yours. Useful if the pilot is dead (so a passenger who is told hit that button in an emergency can safely land), but cannot be used for anything else.