The Porsche 918 Spyder Weissach Package is a hybrid sports car designed by Porsche. The Weissach package is an optional, high-performance upgrade over the standard 918 Spyder model. The package features the use of more carbon fibre components, magnesium wheels and aerodynamic improvements. The Spyder is powered by a naturally-aspirated 4.6L V8 engine and two electric motors, delivering a total of 887 horsepower.