This figure, published by the Pew Center on Global Climate Change in December 2004, shows a standardized comparison of fuel efficiency regulations around the world. It remains a sad chart, one that illustrates directly how a lack of regulation can stunt innovation toward absolutely critical technology. We can talk and dream all we want, applying plenty of American gumption, about how great the day will be when our cars don't burn so much expensive gasoline, emit less greenhouse gas, or maybe even forsake fossil energy altogether. But a firm nudge, perhaps uncomfortable at first, is often what it takes to get behemoths like our auto companies into action. It's clearly worked elsewhere around the world.