boomerang by mojtaba raeisi from iran

When this car is passing the street, people`s eyes follow the car for seconds. According to the "Gestalt" principle; the purple boomerangs make effect on their eyes and that effect remains after passing of the car and people will see the yellow boomerangs in the space.
Track of the boomerang is repeating pattern for background and purple boomerangs are non repeating pattern.
People know boomerang as something that shoots around and comes back to start. Therefore, when people see the yellow boomerangs in the space, after a few seconds they look at the porsche again. Because boomerangs return to their source.