Does anyone know where to buy replacement floor mats for the XLR? I am looking for better quality, more durable material that doesn't show the dirt (like maybe berber) but nobody I have found knows about the "Grommets" that snap into the floor and hold the mat. I have tried the ones with the little "spikes" all over the back, but they move around.

Check with your Cadillac dealer (or Cadillac itself) for a local shop that is licensed to embroider the Cadillac logo. They will have the template for the mat and a choice of materials. If they don't have a template, they just might do yours for free to make the template from your current mats. That's what happend to me.