Yes, it works and it works very well.
I've been using ONR since... I don't even remember, probably 2010 maybe even earlier and that was in Canada where there is plenty of water. It's a fantastic cleaning product, water savings are just an added bonus IMO. It's really great on chrome.
A friend of mine is a classic car guy and recently we got to talking about car washing, specifically chrome and I mentioned ONR to him since it works great on my motorcycles with lots of chrome. He never heard of it.
I gave few ounces to him to try out and after one wash he went out and bought a gallon of this stuff.