Automotive manufacturers rarely collaborate, particularly when they are direct competitors. However, tightening fuel economy and emissions regulations can force innovation in unexpected ways. That pressure led to the development of the Ford 10R80 10-speed automatic transmission, co-developed with General Motors, with Ford leading the engineering effort. The objective was ambitious: design a transmission capable of handling modern high-horsepower engines while achieving efficiency levels approaching a continuously variable transmission. The result now powers vehicles ranging from the Mustang GT and F-150 Raptor to the Expedition and Lincoln Navigator.