For example, 50% of the new Boeing 787 is made out of carbon fibre, making it light and fuel efficient.

比如，50%的新型波音787由碳纤维组成，使其更轻，更省油。

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"Electric cars are one of a suite oftechnologies that are making vehicles cleaner and more fuel efficient, " hesaid.

“电动车是使汽车更清洁、燃油效率更高的一整套技术中的一种。” ，他说。

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Without Opel, GM's promises to build a fleet of smaller and more fuel-efficient cars in North America would lack conviction.

没有了欧宝，通用汽车要在北美开发一批小型清洁汽车的承诺就变得没有说服力了。

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A secondary benefit is getting gas-guzzling old clunkers off the road and replaced with more fuel-efficient band new models.

VOA: standard.2009.05.18

Trains are fuel efficient, they relieve traffic and airport congestion and they also reduce our dependence on foreign oil, making passenger trains the safer,cleaner, greener transportation option."

VOA: standard.2010.02.15

"Two-point-four billion dollars in highly competitive grants to develop the next generation of fuel-efficient cars and trucks, powered by the next generation of battery technologies all made right here in the U.S.of A,"

VOA: standard.2009.08.05

Providing new vehicles, especially more compact and fuel efficient passenger cars, has helped with sales too.

FORBES: Detroit's Hurting In September As Hedgie David Einhorn Picks Up General Motors

The Safe And Fuel Efficient Driving Scheme will pay for the training of 200 instructors to teach advanced van driving techniques - and will then fund lessons for 3, 500 drivers.

BBC: NEWS | UK | Free lessons for 'white van men'

When powered by gasoline, the C-MAX Energi uses the all-new 2.0-liter Atkinson-cycle four-cylinder engine - powerful and fuel efficient and among the most advanced non-turbocharged four-cylinder powertrains Ford has ever offered.

ENGADGET: Ford's 2013 C-Max Energi rolls out 95 MPGe, arrives later this fall