The big rubber mats that I pulled out of my Suburban actually fit the Challenger pretty well. I picked them up at the local parts store. You know the mats...they have the deep diamond-plate pattern on them to keep the junk contained on the mats. While I do not intend on taking my car out in the muck, I still have to get in it to move it from time to time. I figured I'd keep these mats on top of the good ones until spring.