Fuel Efficiency Incentives for Cars Oil Import Vulnerability Reduction
研究了美国通过燃油效率激励措施降低石油进口依赖的效果，数据显示1977至1982年间进口量从8.9百万桶/日降至5百万桶/日，但进口成本持续攀升。
U.S. oil imports have dropped from a peak of 8.9 mbd (million barrels per day) in 1977 (6.2 mbd from OPEC countries) to 5 mbd in 1982. Simultaneously, U. S. demand for oil has dropped from 18.4 mbd to 16 mbd, and our dependency on imports has dropped from 43 percent to 37 percent. Unfortunately, the costs of energy imports continued to climb, from $8 billion in 1973 to $44 billion in 1977 to $81 billion in 1981 (Department of Energy [DOE], 1982).