Never seen one in real life before, so I had to pull over and investigate.
This particular pinwheel was broke down about a mile from my launch point, but all the others closer in were moving at a good clip. Winds were heavy enough I had to add some sport mode correction to hold position on the three wheels I peeked at. Took a couple stills, shot a little video, tried not to get hit by blades. It was a productive stop.