So you will be driving down the street. You'll see this thing that looks like random markings...and then when you get close it will quickly resolve to be a girl chasing a ball?
I wonder if anyone is going to not realize it is a clever illusion, and think that a girl just jumped out in front of them, swerve, and have an accident?
I can't help taking that further and imagining (but not wishing for, obviously) a case where the driver spooked by the illusion swerves into a collision with a school bus full of kids. Oh, the irony.