A gearbox is born | Scania Group This video shows how a Scania 12+2-speed range-splitter gearbox is assembled at the Scania gearbox production facilities in Södertälje, Sweden. Gearboxes are also produced in Tucumán, Argentina. All gearboxes used in Scania’s trucks are developed and manufactured by Scania. Shot in time-lapse Scania’s Automated Manual Transmission - CV news – Truck wwwws›Engines and DrivelineScania Opticruise an Automated Manual Transmission system, is a patented technology and was launched 20 years years ago,in 1995. At that time it was one of the first automated gear changing systems in the market.