Credit: Phil Formby / WTML
We're seeing some interesting results
A wide variety of materials are being trialed, including biodegradable designs and innovative products made from cardboard, although we've found that several of the prototypes have been degraded by the elements already. A model made from British wool and oil from cashew-nut shells has a good sustainability rating and establishes a new market for materials currently considered as waste. It looks robust so far, but it will take several years of field testing to be sure we've found the optimal design.