When I was living in an apartment thirty years ago, I used to go to a do-it-yourself spray carwash with a bucket, car shampoo, sponge, and chamois. I made it a point to go when it wasn't crowded in order to take my time without irritating those waiting to wash their cars. I would rinse the car and fill up the bucket with water/shampoo. After washing it with the sponge, I'd put in a few more quarters and rinse the car. Then I would find a shady spot nearby and dry the car. At times, it became a pain, but it was better than running it through an automatic carwash.