With recent skyrocketing pump prices, very few people can afford to overlook fuel efficiency when shopping for a new or used car. The amount of mileage a vehicle returns per gallon determines your overall operational costs. It may seem negligible to most, but one extra mile per gallon saves the driver a ton of money in the long run. Buying or driving a fuel-efficient SUV can have far-reaching impacts, such as contributing to cleaner air. Fuel efficient SUVs also have the added advantage of cutti