The average carbon content of gasoline is 2,425 grams of carbon per gallon. The carbon fraction oxidized to CO2 is 100%. Assume a test vehicle consumes 1000 gallons. Growing forests store carbon. Through the process of photo synthesis, trees remove carbon from the atmosphere and store it as cellulose, lignin, and other compounds. A certain forest of Douglas fir has a net sequestration of 3.27 metric tons of Carbon/hectares/year. How many acres of forest would need to be planted to offset the use of 3 vehicles?