I bet you door to door work is coming to some type of stand still, no doubt due to the internet access around the world and information about the Watchtower's crooked ways at the householders finger tips via smartphones and all.
I bet the reason these carts are un manned is because of the internet they are embarrassing for the semi-loyal Jdubs stand by. So yeah ,I think that is a super pathetic last stab,, sad really(no just kidding).
Oh and the 2018 annual business(?) meeting starring comedian Governing Body members show signs of great denial in a jovial manner. They were sure yucking it up when they are in some deep doo doo all around the globe legally due to their own criminality in dealing with keeping young people from being molested,, and everything has to do with denial, 2019 should be a very big year for reality to come crashing in on these senile old deluded farts with big fat asses that make up the Governing Body.