One of the biggest problems, it seems to me, that biofuel producers face is ensuring that product is the same batch to batch. So its good to see on Domestic Fuel that one third of US biodiesel producers have won BQ 9000 certification from the US National Biodiesel Accreditation Commission (NBAC). Consistent quality is the key to getting biodiesel more widely accepted in the US.
I hope that commercial pressure will drive more firms down this kind of route.