this stuff is like duct tape, has so many uses, you can clean pretty much any part of your car with it and it doesnt really damage the paint. Even though I wouldn't suggest using a tonne of it to clean your car but for subborn road grime it takes it right off. I would follow with a good clay bar and polish though
used to check for vacuum leaks use it to shoot fire at your buddy while he is working under the car use it as mace use it for home abortions use it as wasp spray
Most of the brake cleaners out there use Perchlorate, which is used in dry cleaning to get your suits clean. Personally, I prefer some Brake-Kleen sprayed into a bag. There's nothing nicer on a hot day than huffing brake cleaner*. Except maybe huffing starting fluid*. *this is a joke. Don't do this, you'll get stoopid like me.