Who Is World Fuel Efficiency Leader?

The EU's current standard is about 40 miles per gallon, the same as Japan's.

Published: 07-Jan-2008

For the first time in more than three decades, the United States in December enacted federal legislation to increase the country's fuel efficiency standards for vehicles. They are slated to reach 35 miles per gallon by 2020. Which of these major economies will the United States outperform with its new fuel efficiency standard?

A. European Union

B. Japan


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The Cadillac Provoq fuel cell concept uses GM's E-Flex propulsion system, combining the new fifth-generation fuel cell system and a lithium-ion battery to produce an electrically driven vehicle that uses no petroleum and has no emission other than water.

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