I picked up some Coroplast pre folded sheets, they use them for signs in front of conveince stores, they are always changing them out, so they are readily available at the station by me. I picked up about 3 brand new pkg's the guy at the store gave me for free plus some huge zip ties are in the package, used to secure the signs to poles. The sheets are 4' x 5' they fold down to about 4' x 2' and I carry one in the back of my car in case I need to do some emergency roadwork (240D). Fluids wipe off easily and they store quite nice in the garage. It's not as nice an option as vstech describes, but beats the heck out laying on the cold/hot or wet floor or wrestling with heavy stuff. If's Free...
