Det er reelt bedre at producere ren biodiesel, ren olie eller at bruge biomassen til at producere hydrogen end at følge en idé, hvor der tilsættes en lille smule brændstof, der stammer fra landbrugsproduktion, til brændstoffer, der dog stadig er fossile brændstoffer, og som altså stadigvæk er produkter, der forurener rigtig meget, når de produceres.
It is better to produce pure biodiesel, pure oil or use biomass to produce hydrogen rather than to follow an approach whereby a small percentage of fuel of agricultural origin is blended with fuels which are themselves still fossil fuels and are therefore still products that produce a great deal of pollution during production.