I also got this from a girl who sold it to me at a gas station and demonstrated it to me on my car. I was very impressed. I bought two cans for $25 plus tax.
She cleaned the door without water, which made me real nervous. I have a Lexus, but it was a good job. She also cleaned my windows and made them feel baby skin soft. Then she did my rims, also making them baby soft and they repel dirt.
Well, I am very into McGuirers and Mothers, cleaning products. I have bought many, so I had to buy this.
I concluded, that it is awsome for windows and rims. I use a clay bar, tech wax and showroom Polish to get that smooth feeling glossy look to my cars.
I cant imagine using this to clean my cars.. the physics of removing particles with a rag dosen't sound right to me. So I know that scratches are happening, even though they are being conceiled by the paroduct.
If anything was the car first, then you can apply.
I bought this for windows and rims.. in this manner it kicks Butt!