What is the most logical next event?

They are washing down cars with soap, including the maserati's tires. They then rinse the cars and wipe them clean. the final product

I. is new tires for the car. II. of the car washes is whatever is being thrown away in the ocean. III. is solar panels and the dealer is now detailing the vehicle with his hands. IV. is shown as a clean, shiny italian car.
IV.