Modern-day Formula One cars are constructed from composites of carbon fiber and similar ultra-lightweight materials. The minimum weight permissible is 740 kg, including the driver, but the cars are designed to be as light as possible to achieve maximum speed. Other materials used for the construction of F1 cars include polymeric fibers such as aramids, Zylon, and highly oriented polyethylene filaments. F1 cars are made up of around 14,500 individual components, and every item is bespoke, with Computer Aided Design (CAD) used to develop the parts and Computer Aided Manufacture (CAM) or hand processing to build them. The composite manufacturing areas of an F1 factory are clinical environments, with air pressure, humidity, and temperature tightly controlled and workers all wearing clean protective overalls and shoe protectors at all times. The technical regulations define ‘rule boxes’ that limit the teams’ designs, including setting specific dimensions for wings and bargeboards, defining no-go aerodynamic areas, and banning certain high-cost alloys in engines.