Some people buy a new or another car every couple years and others don't. We all have our reasons and many of us just wear things down to the bear threads. If we can get just a little more mileage then so be it. My mat is 10 years old. I don't use mine as much as others but at least once a week. It warps a little once in a while. I have a flat surface I can lay it on and I mist it with hot water. Then I use a large dowel like a rolling pin to smooth it out as it dries. This also seems to help smooth out the grooves in the mat.