From the article: “In a move that may presage diesel’s Cinderella-like transformation, the Environmental Protection Agency on Thursday required US refineries to begin making ultra-low-sulfur diesel (ULSD), a fuel with 97 percent less sulfur than ordinary diesel that, as a result, slashes soot emissions. The rule, which mandates that 80 percent of the diesel produced for highway use be ULSD-compliant, was just the first step. By Oct. 15, all filling stations now selling diesel will be required to sell ULSD instead of or in addition to diesel.”

Over the last few months there has been a lot of news about emerging technologies for transportation efficiency: Hydraulic Hybrids, engines that run on several different fuels, emerging ethanol tech and now clean diesel. I wonder what it would take to get a major manufacturer to put some of these technologies together into, say… a hydraulic hybrid SUV that can run on gasoline/ethanol/diesel/biodiesel while putting out a minimum of pollutants and getting 50mpg.