I once managed to get my Tesla to slow down dangerously while on autopilot by having a friend hold a copy of a fake speed limit sign by the side of the road. I

I once managed to get my Tesla to slow down dangerously while on autopilot by having a friend hold a copy of a fake speed limit sign by the side of the road. I'd like to name this act "Tesla swatting". Next task: can I make the Tesla following me slow down or speed up by attaching a fake speed sign to the back of my car?