I am now hooked. After reading the thread, I tried it out last night. I had 8 quarters in the change holder and 2 in my pocket. In less than 10 minutes I cleaned the entire car including the wheels and engine. With all the spokes on the SRT wheels, it usually takes me about 10 minutes to clean one wheel.

This morning, I pulled all the quarters from my change jar and have them in the car!