I tried Maguires "Ultimate Wash and Wax Anywhere" for the first time last week - just the dry wash, without first cleaning the car with water.
It's amazing stuff - highly recommended. The only thing I found tricky was that the spray's so fine it's easily caught by wind. Unless it's a very still day, next time I'll use it *in* the barn.
I hadn't thought of trying the Detailing spray as a next step - an interesting idea; I'll give it a shot.
Will