one of the first electronic fuel injection systems (Caproni-Fuscaldo) in the Alfa Romeo 6C 2500 with "Ala spessa" body in 1940 Mille Miglia. The engine had six electrically operated injectors, fed by a semi-high pressure circulating fuel pump system. 1969 models for the North American market had SPICA (Società Pompe Iniezione Cassani & Affini, a subsidiary of Alfa Romeo) mechanical fuel injection. According to Alfa Romeo, the engine's power output and performance were unchanged from the carburetted version. The SPICA system continued until the 1982 model year with the introduction of 2.0 liter Bosch electronic fuel injection. Many examples of SPICA powered Alfa's are found still running, Mechanical variable valve timing was introduced in the Alfa Romeo Spider, sold in the U.S. in 1980. All Alfa Romeo Spider models from 1983 onward used electronic VVT. The 105 series Giulia was quite an advanced car, using technologies such as all-wheel disc brakes, and a plastic radiator header tank. It had also the lowest drag coefficient (Cd) in its class The same trend continued with the Alfetta 2000 and GTV, which had quirks such as 50:50 weight distribution, standard fit alloy wheels and transaxle. Newer innovations include complete CAD design process used in designing the Alfa Romeo 164 and an automated/paddle-shift transmission called Selespeed used in the 156; the 156 was also the world's first passenger car to use Common rail diesel engine. The Multiair -an electro-hydraulic variable valve actuation technology used in MiTo was introduced in 2009. In 2016, the Alfa Romeo Giulia came with electrical brakes. Body design Many famous automotive design houses in Italy have accepted commissions to produce concepts and production vehicle shapes for Alfa Romeo. These include: Bertone Giorgetto Giugiaro / Italdesign Pininfarina Zagato Centro Stile Alfa Romeo Construction techniques used by Alfa Romeo has been imitated by other carmakers, and in this way, the Alfa Romeo body designs have often been very influential. The following is a list of innovations, and where appropriate, examples of imitation by other car manufacturers: 1960s: Aerodynamics: The 116-series Giulia had a very low Cd. Toyota, in particular, sought to produce a similarly shaped series of vehicles at this time. 1970s: Fairing of bumpers: In order to meet American crash standards, Alfa Romeo formulated a design technique to incorporate bumpers into the overall bodywork design of vehicles so as to not ruin their design lines. The culmination of this design technique