This spring the Barack Obama administration took a first step toward achieving a nation-wide fleet of (comparably) green vehicles. The administration officially confirmed that by the model year 2016, the US car fleet must measure up to an average fuel economy standard of 35.5 miles per gallon. The announcement marked the first time fuel economy standards had been raised since 1990, and remains perhaps the single largest thing the Obama administration has done to combat global warming. However much remains to be done before we’ll see truly green vehicles in this country.