Fuel Economy of the Beast

This tank of gas got me 319.6 miles. Tonight I put in 20.570 gallons. This averages out to be 15.5 gallons. In 1997 EPA estimates for this truck were 15 for city and 20 for highway, with an average of 17. I think I could save money if I got a small car that got over 30 miles to the gallon.