You are rolling along minding your own business, and suddenly out of nowhere a portapotty starts stalking you down the street. You dont need to use a bathroom but it just keeps silently following you, maintaining a distance that is both comforting and creepy as hell. You feel watched, because you are. Both by the portapotty and by everyone in the vicinity who are waiting to see if you do need to use the bathroom. Those algorithms are always right, thats what the marketing said anyway.