Back in 2001 Formula 1 race at San Marino, Williams BMW F1 team painted the words "Keep Your Distance" on their F1 rear wing.
This was to warn rivals from crashing into them following a series of incidents.
Now, I am tempted to have a decal on the rear of my bumper that says the same thing. Reason being, all these attention from the road is really getting on my nerves. SUV/cars/morons/taxi drivers tailgating me cos they want to get a closer look at my smart arse.