When it comes time to fill up the tank, it's not easy to justify a full-size sport utility. But even as you pour 28 gallons of regular unleaded into the Expedition's gas tank, you can take heart in this sport-utility's ability to make a family vacation not only possible but also practical.Ford is the first to admit that the sales of full-size, truck-based sport utilities have dropped some 40 percent since 2004 as people turn to smaller, more fuel-efficient, car-based utilities for their daily transportation. But Ford also reminds us that fuel prices have simply chased away the people who really shouldn't have been driving a full-size sport-utility in the first place.Click here to read more