"'We have done everything that it is within our power to do. We have cleaned up industries that other sections of the country have deemed impossible to control — steel mills, petroleum refineries, smelters, railroads, shipping. We have helped our electrical utilities obtain more gas for their steam plants. We have issued 5,000 citations in the last three years, and levied half a million dollars in fines. Despite this, we still have smog. There remains one source of air pollution beyond our power to control. Every day in Los Angeles County, 2,700,000 automobiles are burning 5 million gallons of gasoline, and fouling our air with 8,000 tons of contaminants. These emissions include: 6,400 tons of carbon monoxide, 300 tons of oxides of nitrogen and 1,050 tons of hydrocarbons."