I stopped for gas about 10 years ago and kids were demoing this stuff from a folding table. I had some spots of cement that had splattered on my white tailgate and I had not noticed them until cleaning it -- and I could not get them off. Did not scratch them off because I'd just have scratches. A kid talked me into letting him try his stuff. Sprayed it on waited 20 seconds and wiped it clean. HOLY COW! I bought a can and went on my way from OKC to Amarillo. In Amarillo, I decided to use it to clean my F150. Got ALL the cement off and everything else. Looked like a new paint job. SO EASY it wasn't even funny. When I got back to OKC, I stopped at that gas station and, thank God, they were still there. I bought a case!!! I've used it once or twice a year on 2 vehicles. Hoarding it. (Actually I gave one can to a great friend to try.) I finally got around to cleaning my car today and could not find any in my cabinet. I tried ALL the other products -- and I have MANY (for some reason). I even tried WD-40 and Silicone spray. I stopped short of breaking out the lacquer thinner. Anyway, I went back into the house to cry (yes, I'm a girl). I looked online and it's been so long since I'd bought it I'd actually forgotten the name. Found it immediately. And then I decided to look in one last place. HALLELUJAH!!!! One last full 17.5oz can! I'm so happy because I live 20 miles out and I can clean my car NOW! Buying this product will be the best auto-cleaning decision you will ever make. I don't normally take time to write a review, but there is not any praise too high for FW1. --Anne