I read somewhere that there was something that you can put on your car windows. It helps keep the windows together in a crash, so that the glass won't fly and hit the kids in the backseat. I don't know exactly what it is or how it works, or even the company. I can't find the website on it. I think I ran across it once when looking at carseats online. Does anyone know what I am talking about? Or where I can find the info on it?