[kaisen]

However, let's also discuss CAFE and what it stands for: Corporate Average Fuel Economy

Anything under 8,600 pounds gross vehicle weight falls under the average.
Ten years ago, twenty years ago, there weren't as many 'large' vehicles sold. Yet manufacturers STILL found ways to meet the CAFE standards.
So even a 1/2 ton pickup that will be used to tow and haul is calculated in the average. They get considerably better fuel economy today than they did ten or twenty years ago. And since more of them are sold than hyper-mile economy cars, MORE fuel is saved in the SUV/CUV/Truck segments than will ever be saved by an Insight or Prius or Jetta TDI