carbon sequestration?
View this with a jaundiced eye, but it does offer a transition for a lot of tobacco farmers from something that is pretty much exclusively damaging to public health to something less so, and if the process is used for sequestration only, i.e., the biodiesel not used for transportation fuel, this is a pure win. We do need to make certain it's not a boondoggle like using our food supply for ethanol (and I firmly support ethanol if we're not getting off hydrocarbon fuels anytime soon, but we need to derive it from non-food sources>)