My go to is in the warm weather I wash by hand here in the driveway, and apply a good coat of ceramic once or twice during those months. The stuff I've been using so far lasts maybe 4 months, but I am going to try a better product next time around. When the weather isn't great for hand washing in the driveway, I go to a local wash bay on my way to work with the simple wand. The one I go to is dead in the morning when I go through, so there is nobody waiting to get upset by my process. I put in the minimum charge to start the water, and rinse off the mud (I work and live on dirt roads, so the white car is brown from the beltline down), then I soak it in soap. Sometimes the wand won't put a good enough amount of soap on, so i use the brush (never actually touching the car with it) to get soap all over the car. About that time the machine times out, and I use a wash mitt I keep in the back of the car to wash the whole vehicle, then turn the wand back on for the minimum time again to rinse it all off. I also keep the synthetic chamois in the back, and get it all dried off.