Lamborghini Miura cars over the race car-derived machines produced by local rival Ferrari. The Miura's rolling chassis was presented at the 1965 Turin auto show, and the prototype P400 debuted at the 1966 Geneva show. It received stellar receptions from showgoers and the motoring press alike, each impressed by Marcello Gandini's sleek styling and the car's revolutionary mid-engine design. Lamborghini's flagship, the Miura received periodic updates and remained in production until 1973. A year later the extreme Countach entered the company's lineup, amid tumultuous financial times for the company. During 1965, Lamborghini's three top engineers, Gian Paolo Dallara, Paolo Stanzani and Bob
V12 engine the advantages of lower centers of gravity and improved pilot visibility for single-engined designs. Only the pre-war origin BMW VI V12 of Germany was an "upright" engine. The United States had the experimental Continental IV-1430 inverted V12 engine under development, with a higher power-to-weight ratio than any of the initial versions of the German WW II inverted V12s, but was never developed to production status, with only 23 examples of the Continental inverted V12 ever being built. The only American-design inverted V12 engine of any type to see even limited service in World War II was the air-cooled Ranger V-770,