[ct0]

I saw this happen in real life the other day on a recent trip to home depot. Saw someone walking down the road on my way into the store. On the way out I noticed gmaps reported a very quiet behind-the-store road as red, with heavy traffic, presumably the single person walking created the jam.

[AyyWS]

This happened when I was lost in St Louis. I pulled off the highway to a side street to check google maps, and maps reported red traffic at midnight in front of the empty parking lot of a closed business campus.