 Imagine if you were on a vacation driving through the desert. You're enjoying the desert scenery and letting your mind wander as you admire the vast terrain and all of the beautiful natural landscape. All of a sudden you see a sign that says next gas 100 miles. You look down at your gas gauge and notice you have a little less than a quarter of a tank. Immediately you begin to think of how you overlook such an important detail. You start to second guess your car's gas mileage. You turn the air conditioner down, roll down your window, and you eventually decrease your speed to help get better mileage.