Porsche have released a special limited edition 911 Turbo S to celebrate the soon to be launched 918 Spyder supercar. The car features the same engine as the standard Turbo S with a similar exterior but includes new carbon fiber elements with acid green mirrors, brake calipers and interior stitching The interior has special leather seats and a unique plaque on the glove box. The Porsche 911 Turbo S 918 Spyder Edition is available in both coupé and cabriolet models in extremely limited numbers from Porsche.