A few year ago, just for fun, I was etching everywhere I could. I etched a small butterfly in the corners of each one of the windows of my car. A few years later a window was cracked and I took it to be fixed. They charged me for a new glass, but only filled the crack. The guy said I was a liar. He swore he replaced it and when I asked him if he had etched a butterfly on the new glass he didn't know what to do with himself. Needless to say, he lost a customer. I tell the story to everyone and some of my friends had me etch little things on their cars too. I didn't do it to bust anyone, just to personalize my car.