11.   The more experimental models in the race are far more fuel efficient, using big electric motors and small gasoline engines to gradually recharge a battery pack.

12.   The price increase, consequently, is one that boat buyers are likely to accept, especially since the engines are cleaner and more fuel efficient, Esposito said.

13.   The study includes other ways to reduce costs, such as more efficient fuel management and use of contractors, Brown said.

14.   The venture hopes to capitalize on growing demand among U.S. auto makers for aluminum parts to make lighter, more fuel efficient vehicles.

15.   In the House, Democrats promised to fight for more fuel efficient motor vehicles as part of an energy package.

16.   The broad restriction is aimed at getting the auto industry to produce more fuel efficient vehicles, especially sport utility vehicles and light trucks.

17.   The panel also recommended the development of more efficient solid fuel for the jet.

18.   Tight markets for refiners have already prompted British Petroleum to close or modify some of its less efficient fuel plants in Europe.