So check this out. I was directly involved in the making of these two (makes of) Hummers. I programmed the CNC machines that made the molds for the rear carpet of these trucks.
Yes, the carpet in your car is molded. They heat the material to a few hundred degrees, then place it into the mold. After that, it is moved to a waterjet machine, which cuts it to the right size, and cuts any holes (like to go around the brackets on the bottom of your seat).
Yes, my job is pretty cool.