Guided missiles for delivering post!

We know that the US is the big brother when it comes to artillery and weapons,but using it in the name of innovation is really taking it too far.Apparently,in the summer of 1959,the United States postal service experimented with the delivery of letters by guided missiles.Obviously the experiment's results were a failure(who knows what happened to the 'targets').Well,we can all thank ourselves that they didn't go along with that idea!