Robots?
I was in Wally World last week when I ran into a robot, yes, a real robot. The robot was working its way through the aisle next to the Pharmacy, one of the busiest in the store. As it approached it ended up heading right at me, so I just stood there to see what it would do, it made a couple of turns and glided past me. It appeared they were testing it, the "left" side was an obvious attachment point for something, I have no idea what.

Not something you see everyday.  A quick search found it, video attached. The one I saw didn't have any lights on it when I saw it, it had a spider web of reinforcements for mounting points.