If you're that concerned about the price of fuel, you're in the wrong vehicle.
My Focus is my DD, 56mpg highway, 34 in the city. However $$ is $$ and I'd rather not pay more to drive my jeep if I dont have to. simple as that.
If you could pay 5$ for the same cheese burger as 8$ would you not pay 5$ or would you pay 8$ just for the hell of it.