The jatropha tree which produces golf-ball sized fruit and oil that can be used in any standard diesel engine, is gaining much recognition. Jatropha tree oil does not require any processing and has been used for years in South America for medicinal purposes.
Countries such as China, India, and Brazil have already began to plant jatropha tree groves, however the United States has not made any investment in the trees yet. Companies such as Chrysler motor and Air New Zealand are taking the biofuel very seriously. Air New Zealand even believes the quality of the oil is high enough that it would not need to mix it with any other form of fuel in order to power their planes.
Scientists do not believe that the jatropha tree will ever be a sole fuel source, but considering the tree’s ability to grow in harsh conditions with minimal water, jatropha trees as biofuel are very appealing.