Yep, that's the legislation I was referring to that's the cause of the massive rise of gigantic trucks in the past decade.
There's some formula between overall car area (the literal length x width of the vehicle) and the allowed mpg for the automaker's corporate fuel economy. Yay for second order effects...
> There's some formula between overall car area (the literal length x width of the vehicle) and the allowed mpg for the automaker's corporate fuel economy. Yay for second order effects...
Well, every economist (or anyone with half-a-brain) could have predicted these effects.
Those standards are pretty silly, even without the loopholes. They should just tax CO2 emissions (or petrol), and let the market sort it out.