Since it rains almost always here in Kentucky/Ohio area, it's hard to keep washing my black Max.
I was wondering if there is a product that could be sprayed onto the car when it rains so it can wash the car and make it look nice - just like a car wash. Some kind of a dishwasher soap/detergent/whatever??

You guys seen anything like this?

 

I can't see that working. I think anything that was loose enough to get washed off by raindrops would get just fall off the paint when you are driving.
If you did spray something on the car and let the rain wash it, the drops probably wouldn't take off much dirt since it takes a moderate amount of force to scrub the dirt off. Then if you had any little bit of soap left on your car, it would leave nasty spots on your paint.
I haven't seen any products for this purpose and I understand why.

 

Not to mention the fact that the rain may have other things in it that may actually be more harmful to the paint (dependent on area).

 

I have the same problem. In MD, it's been raining constantly. My black looks like hell. Water marks and bird crap every damn day.