Fame
Every technology has its person. You know, the man or woman who museums put up a statue of next to the exhibit. Pulley systems? Archimedes. Airplanes? The Wright Brothers. Electricity? Thomas Edison. Biofuel?...Hello? ...Bueller?...Bueller?
By our calculation, there's probably just one available spot for biofuel's eventual "person." The rest of the biosystems engineers will probably remain anonymous farmers good at calculatin'.