Most self-service car washes are coin-operated brush-and-hose combinations that the driver uses to dispense soap, wash the card and rinse it off. The self-service car wash patron is typically a ...

then narrow the nozzle for the high-pressure rinse just like you would at a coin-op car wash in the convenience of your driveway. As a smaller model, soap tank capacity is limited to 14 ounces.