Its 23 pounds of CO2 per 7 pound gallon of gasoline. Simple chemistry. A (CH2)x unit in gasoline combusts to CO2. Thats an increase from 14 atomic units to 44 a

Its 23 pounds of CO2 per 7 pound gallon of gasoline. Simple chemistry. A (CH2)x unit in gasoline combusts to CO2. Thats an increase from 14 atomic units to 44 atomic units by replacing H by O. Since the average internal combustion vehicle uses 500 gallons a year, that is about 6 tons of CO2.