Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green. As we head towards the home stretch of the 2012 presidential campaign, we're closely watching both candidates to see what they're doing for the environment. The Obama administration scored a major win for fuel-efficient cars this week by finalizing new standards that will increase the fuel economy of cars to the equivalent of 54.5 mpg by 2025. But what about the cars that a