Tesla has made available new floor mats for the driver and passenger side of the Model S. The old floor mats had a tendency to bunch up under the pedals and the passenger mat tended to flip over on itself. These new mats (Installed free at your Tesla service center) are heavier, stiffer, and more plush than the old mats. The have a velcro backing which sticks to velcro buttons which are permanently attached to the floor carpet. They really stay anchored. I recommend that everyone get this "upgrade".