I can talk a bit about the SRM issue. The SRMs have become a really big problem since BSE hit. One day you could use this material, the next day there was nothing. No program facilitated use of SRMs.
Ideally, we should be able to use a lot of waste products for biofuels to produce energy. I have a lot of hemp straw right now that can't be used for anything; it's got to be burned. But for that to happen, a lot of infrastructure needs to be built, and where does that come from?
We've already seen such aggressive action toward ethanol and biodiesel. Millions of dollar have been spent on that infrastructure already. To say we're now going to go off on this other tangent and use these materials and we'll throw in whatever else we want...these things take years and years to build, and it's a complicated issue.