Biodiesel's outlook may appear limited when compared to that of bioethanol, which has a huge market and tremendous potential to cut costs. But keeping our energy-crop policy in place is likely to spur the ongoing development of related technologies. Perhaps one day if we can find a use for the portions of sunflowers not converted into oil, the situation will change.
相對於生質酒精的龐大市場和成本降低可能性，生質柴油的發展潛力受限，但維持政策可促使相關科技繼續發展，說不定有一天，當向日葵的殘渣被發現也可生產高價值的副產物時，就將鹹魚翻身。