Porsche 718 Cayman GT4 Clubsport, 2019. The new 718 Cayman GT4 Clubsport is the first ever production race car to feature body parts made of natural-fibre composite material. The driver and passenger doors and the rear wing are made of an organic fibre mix, sourced primarily from agricultural by-products such as flax or hemp fibres and feature similar properties to carbon fibre in terms of weight and stiffness.
