11.   An alliance of House Republicans and some labor unions Wednesday repelled an attempt to mandate a large increase in fuel efficiency for sport utility vehicles and light trucks.

12.   An innovation on this vessel will be a new Azipod propulsion system, which advances operations, maneuverability, and fuel efficiency far above present propulsion systems.

13.   And because of its high fuel efficiency, it puts out half the carbon dioxide and one-tenth of the pollutants.

14.   And new technologies that promise much higher fuel efficiency at minor expense, like hybrid gas-electric cars, are already available.

15.   And the amount goes up even more with higher fuel prices, more miles or lower fuel efficiency.

16.   And the additional power comes with lower emission levels and more fuel efficiency.

17.   And we have a nation that has given to driving vehicles with horrid fuel efficiency.

18.   Any car could double its fuel efficiency by using hybrid gas-and-electric technologies that are just coming onto the market.

19.   As the popularity of light trucks and more powerful cars has risen, overall fuel efficiency has stagnated.

20.   At the same time, fuel efficiency has risen dramatically.