Mean, green, fuel machine!
Estimated cost of $7.50 per gallon
The future of renewable energy!
A land area three times the size of the United States would be needed to replace all fuel used in transportation with corn-derived fuel. However using algae, only an area the size of Maryland would be needed.
This biofuel is carbon dependent, has relatively high upfront costs, and it's not yet clear what the cost per gallon will be yet.