There's "spin," and then there's world-class, professional grade spin. This definitely falls in the latter category.

When GM unveiled its remodeled large SUVs on Tuesday, GM marketing director Mark LaNeve said that talking about fuel economy would be a key part of its SUV marketing campaign. Everything is relative, of course - you can expect the term "best in class" to be used describe the big utes' gas mileage, not "great."

Full-size SUVs are critical to GM, which has a 50 percent share of the market. Unfortunately, the market has shrunk by more than 20 percent recently, accompanied by plummeting profit margins.

In addition to improving fuel efficiency with measures like improved aerodynamics, GM is promoting flex-fuel versions of the vehicles.

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