- Decisions about fuel efficiency are made by car manufacturers.
- Car manufacturers sell their cars to new car buyers.
- New car buyers are wealthier than the population as a whole and fuel costs make up a smaller portion of their income and spending. ($85,000 avg. household income for new car buyers in 2003 according to J. D. Power)
If fuel prices are raised high enough (say, $7-$8 gallon) to affect the purchasing decisions of new car buyers, the buyers of used cars will be bearing the brunt of the high priced fuel, because they will own the less efficient, older cars.