I am buying a 5HP compressor soon to use for a certain project.

Is there any accessory I can attach to the compressor to spray a mixture of
water and soap to wash a car. I know there is such a thing as a Power
Washer, but I don't need so much pressure. So I think that the next best
thing is a sort of power sprayer similar in principle to a paint sprayer.
One thing that might be different from a pain sprayer is a way of attaching
a garden hose to it.

Thank you for reading my question.

rod