I love
lamp graphs.
Seems petroleum consumption has way more to do with economic factors than it does with efficiency laws.
Do people setting CAFE MPG targets understand physics and economics, or do they arbitrarily set the targets? The law of diminishing returns applies to everything, and going from 15 MPG to 30 is orders of magnitude easier than going from 30 to 60.
This image which projects future MPG based on proposed CAFE standards shows the opposite of diminishing returns; that it will somehow get easier to improve fuel economy; that the low hanging fruit was left for the end and that we started with the hardest hanging fruit.
