Optical Illusions That Make Street Signs 'Invisible' | The brain and illusions | Scoop.it
This is quite an elaborate way to avoid parking tickets.

Los Angeles artist Cayetano Ferrer likes to hide things in plain sight. Street signs, for example: Using photos depicting hyper-realistic city scenes, he can transform a "No Parking" notice into an patch of thin air – quite a handy talent if somebody wants to avoid parking tickets.