F.A.T. played a practical joke on Manhattan residents recently by creating a fake Google driverless / autonomous car and “autonomously” roaming the streets. They displayed terrible driving skills (even staged some accidents), and acted as offensively as they could. See the very funny resulting video below.
If you want to make your own, they even shared the instructions on how to print your own “LieDar” (a fake Lidar sensor that gives the car the distinctive autonomous look) using a 3D printer or a 3D printing service.