That thing worked so well, I had to research it. Here's the process:
Mr. Clean AutoDry Carwash is a hand-held washing system that eliminates the drying stage from the cleaning process. It's a handheld sprayer that attaches to a garden hose. A knob controls the rinse water, the special "dry rinse" polymer wash soap and a de-ionizing rinse filter. You'll still need a sponge, cloth or brush to wash your rig.
Make sure you pre-rinse and wash EVERY inch of your vehicle as it will be so clean after the final misting rinse of de-ionized water that any area that didn't get cleaned with the polymer soap will stand out like white shoes after Labor Day.
Using Mr. Clean AutoDry Carwash won't necessarily reduce the time it takes to WASH your vehicle, you just won't spend time or energy drying it.
The dry rinse soap's temporary coating does not affect wax or clear coat, but it does wear off after a few rains. You'll know this has happened when water stops sheeting and starts beading again.
A bit of a drawback is this system does not project a long, powerful stream of water, but it certainly works as advertised which is you won’t have water streaking or spotting on your vehicle or windows... and all without drying it. That works for me.
You can buy the system at Walmart, Ace Hardware, Costco, etc... But where ever you buy it, don't pay any more than $20-$25. Extra wash soap and filter refills are available where ever you buy the system, except for maybe Costco.