I bet that Miscanthus in Illinois can beat this, but even at these numbers, “cellulosic synthetic diesel”, which can be produced today using commercial off the shelf technology, would be commercially viable if feedstock costs could be locked down and kept in control (which is really the piece that mkes BTL difficult if not impossible to finance in today’s market).
Growing switchgrass to cost $60 a ton
http://www.rapidcityjournal.com/articles/2008/03/10/news/agnews/doc47d36c3b81b86970403831.txt