BedRug, the maker of some of more popular pickup bed liners on the market, has a simple solution for working beneath your vehicle. The foldable four-by-two-foot TrackMat resists stains, oil and other chemicals, while providing plenty of cushioned comfort for your knees and back. The product is also made with the same kind of material used in life jackets so it will repel water and mildew. TrackMat folds in half for storage. You can get the full details, including a full list of retail outlets, at www.bedrug.com. You can also purchase TrackMat for $40 through a number of online resellers, including www.autoanything.com and www.jcwhitney.com.