A promotional video for GM's all-new 2007 Chevy Silverado and 2007 GMC Sierra large trucks. GM wants us to believe that both models will help alter its lineup to include less "gas guzzlers" and more alternative fuel vehicle...
To do that, the Sierra offers a FlexFuel engine which allows consumers to run their vehicles using regular gasoline, E85 ethanol or a combination of both while, according to GM, the Silverado's new body design is more aerodynamic thus reducing drag and improving fuel economy.
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