My car was ceramic coated about a year prior to my purchase. Since getting my car I have applied a ceramic coating to the entire car again. I often use Adam’s detail or their ceramic coating detail spray in between washing the car. So the car really shines. I recently purchased a de-ionizing car wash system from Costco. The wash system is supposed to last for 4 to 6 washes before you change the media. I don’t let the car get really too dirty so I have found that I can just rinse the car and that is enough to remove most dust and dirt. I use a micro fiber cloth to gently remove most of the water before trying to actually dry the car. That essentially gets any dirt that was not removed by just rinsing. Only rinsing the car should ensure the de-ionized system lasts for at least ten or more cleanings. The idea is that you can wash the car with the appropriate soap, then rinse off and walk away not having to actually dry the car. The Beauty of using de-ionized water is you will not have any water spots and the car can air dry. The car really shines. I also use a 50 foot hose that shrinks up when empty, so it is easy to coil up. What methods do the rest of you use?