I'm surprised that this wasn't invented back when Henry Ford was trying to use agricultural products in autos. (The "hemp car" urban legend comes from that project.) Plastics were expensive, so there were attempts to use agricultural products as filler. The trouble was that cellular materials swell when wet. Plastic+ag waste didn't hold shape if used for exterior auto body parts. Same problem as Masonite, particle board, etc.

With enough heat and pressure, does this new material avoid that problem? Or is it a "do not get wet" product.