Re: my depressing previous post on the DOD's as yet unsuccessful attempt to make a fuels market via vehicle and aircraft certification, here's a local company (local to my home town of Boston, that is) that's making some early but significant progress towards becoming a future fuel provider.
GreatPoint Energy is taking a run at turning the coal-to-fuel gasification process into a real business. This CNET article by clean tech reporter Martin LaMonica provides a good overview. Note: the end product GreatPoint is shooting for here is natural gas, not jet fuel or diesel. But they still provide a good example of some of the challenges, as well as the potential rewards, that await companies that pursue similar paths.