21.   At the moment, with gas prices low, Detroit can count on the indulgence of consumers who seem unconcerned about fuel efficiency.

22.   Binder said aluminum casting will be a strong growth market in the future as carmakers demand lighter engine components to increase fuel efficiency.

23.   Both sides repeatedly cited the National Academy study, with proponents noting that it said that greater fuel efficiency is possible in the coming years.

24.   A House subcommittee has overwhelmingly endorsed proposed legislation requiring automakers to increase car-truck fuel efficiency.

25.   According to the Russians, the modifications make their planes as good or better than Western ones in the areas of fuel efficiency and reliability.

26.   Adding to its value is a sequential port fuel-injection system for the engine, which while not increasing horsepower, does add to the fuel efficiency.

27.   Again, Right said, if prices stay at these levels or higher, he thinks people will again turn more of their attention to fuel efficiency.

28.   But a draft leaked to the New York Times and reported Tuesday indicates the panel will in fact urge the government to require higher fuel efficiency in autos.

29.   But fuel efficiency for cars has stagnated in recent years.

30.   But to the extent that the Escape expands the sport utility market at the expense of cars, it could actually hurt overall fuel efficiency.