V12 engine for the postwar market in Europe, production of V12-engined-cars was very limited until the 1960s. Ferrari has traditionally reserved their top V12 engine for their top-of-the line luxury sports coupes since 1949. Ferrari's closest rival, Lamborghini has also used the V12 configuration for many of its road cars since the company's inception in 1963. In 1972, Jaguar introduced the XJ12, equipped with a 5.3 litre V12, which continued (after revisions in 1993) until the 1996 model year, after which the marque discontinued the twelve-cylinder engine. BMW returned to V12 designs for its 7 Series sedan in model year 1986, forcing
Who Killed the Electric Car? come down to $4–6/kg (without carbon sequestering) due to reduction in the price of Natural Gas as a feedstock for steam reforming owing to the proliferation of hydraulic fracturing of shales. A kilo of Hydrogen has the same energy yield as a gallon of gasoline although production currently creates 12.5 kg CO2, 39% more than the 8.91 kg CO2 from a gasoline gallon. General Motors (GM) responded in a 2006 blog post titled "Who Ignored the Facts About the Electric Car?" written by Dave Barthmuss of GM's communications department. In his June 15, 2006 post—published 13 days before the film