CAR WASH EXTRA is a job title for someone who works in a car wash. This person is responsible for providing additional services such as waxing cars, which requires three letters to spell out. This job involves cleaning and polishing the exterior of vehicles, as well as applying WAX to protect the paint and give the car a glossy finish. The CAR WASH EXTRA must have knowledge of the different types of waxes available and how to apply them correctly. They must also be able to work quickly and efficiently to ensure customer satisfaction.