For touchless drying, use an inexpensive leaf blower. You can't properly wash and dry it without touching it, but you could try. Rinsing it, spraying it with soap, rinsing it again and then blowing it dry with a shop vac could work to some extent.

To wash and dry your car without touching it, you can follow these steps to minimize scratches and swirl marks:

1. Pre-Rinse with High-Pressure Water

• Start by thoroughly rinsing your car with a high-pressure hose or pressure washer. This helps remove loose dirt and debris without physically touching the surface.

2. Apply Foam Cannon or Snow Foam

• Use a foam cannon or snow foam sprayer attached to your pressure washer. The foam will cling to the surface, breaking down dirt and grime. Let the foam sit for a few minutes but avoid letting it dry completely.

3. Rinse the Foam Off

• Rinse off the foam thoroughly with a high-pressure hose or pressure washer to remove dirt lifted by the foam.

4. Apply a Touchless Car Wash Solution

• Use a touchless car wash solution specifically designed for contact-free washing. These are chemical agents that break down dirt and road grime. Spray the solution onto the car, let it sit according to the product instructions, and then rinse it off.

5. Drying with Air

• Use a car dryer, leaf blower, or air compressor to blow the water off your car. Focus on areas like mirrors, door handles, and crevices where water tends to accumulate. This method ensures the surface stays free of streaks or water spots without any direct contact.

By following these steps, you can wash and dry your car effectively without touching the paint, reducing the risk of scratches or swirl marks.