Ceramic coating, problem solved. Washing is consists of blasting with hose then blasting with leaf blower. I don't touch the car, so no swirl marks can occur. i will use a soft microfiber wash mit once a month if needed. Its like its permanently waxed, ceramic is hard so less prone to swirl marks. I used exclusive detailing co, they were great really happy with the results. https://www.exclusivedetailingco.com/