Ford, for instance, has tied its wagon for the last few years to boosting fuel economy across its spectrum of products, ranging from the new subcompact Ford Fiesta to a line of gas-sipping EcoBoost engines that has even buyers of F-150 pickup trucks grasping for big gains in fuel economy.

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Meanwhile, Ford is rolling out a more fuel-efficient lineup of power trains for its 2011 F-150, including a 3.5-liter EcoBoost engine and a new six-speed transmission.

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Also, Ford has been advertising the popular EcoBoost option on its F-150 trucks, touting the fact that its best-selling vehicle provides not only segment-leading fuel economy but also towing and performance capabilities that pickup-truck owners demand.

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