2. Chevrolet Silverado/GMC Sierra
2. Chevrolet Silverado/GMC Sierra
Est. profits since 1995: $40 billion

Put together, sales of General Motors two full-sized trucks nearly match -- and sometimes exceed -- those of Ford's top-selling F-series. They're very profitable for the same reasons, too: gigantic sales and simple body-on-frame engineering that hasn't fundamentally changed in, literally, lifetimes.

By Peter Valdes-Dapena @PeterDrives - Last updated December 01 2011: 12:39 PM ET
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These are the hybrid and traditional gas powered cars that use the least fuel for the 2012 model year.

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