There is a misconception that these standards are met through technological progress. Cars and trucks are simply made more efficient, right? Wrong, because that is technologically impossible. In reality the standards are met by forcing people to buy smaller, lighter (less safe) and less powerful cars. In engineering, “efficiency” means doing the same job with less energy, but in the Cafe case it means doing less of a job. Making a car or truck smaller, lighter or less powerful reduces what the car can do. This is asceticism, not efficiency.