Is that Rice? What about if it was on a 1971 Mach1? Would that be Rice too? There was actually a reason for them on the early 70's Mustangs because the rear window was damn near part of the roof, and the sun would simply bake and fade anything to include the carpet that was in their rear. In my estimation, the early 70's Mustangs had the most impractical body design of all of them.
