One line in the article says it uses "high sulpher fuel" like JP-8. You can bet the enviro people will have issues with it if they try and make something similar for civilian use in the US. The military likely won't develop a diesel version as the military is in to a one fuel powers everything mode. I don't know if they even still use diesel fuel, but all new military vehicles (from jets to tanks to trucks to helicopters) have to be able to run on JP-8. It's actually a pretty good idea. One fuel truck can deliver fuel to anything on the battle field.