In this process performed by the robots, it uses a feed back loop by which information is transmitted from the carwash equipments which are fixed at different points in which the vehicles is shifted to and from while being cleaned. With of How it works? These transmitting sources mechanical energy gets converted to electrical energy in a process called transducers.
It is an art form mostly for industrial use to make interesting images in accord with advertising. This style uses a couple of photos to make one that is considered imaginative.
Some popular brands of auto soap available are Mothers, Meguiar's, Mr. Clean, and Turtle Wax