Sud factory water spot remover in action obs Chevy

I bought a 90 Silverado with 70k miles that had been sitting for years. Sprinklers were hitting the windows at then 110 degree heat in the summer was baking it into the glass. I tried every; vinegar, muriatic acid, lemon juice etc… I was going to try to find good used glass from a junk yard and I had a social media ad for sud factory. I figured what the hell…. It took a little more elbow grease than I thought but it worked great!!!!