Um, that's nice? How many pounds of sorghum does it take to make one pound of fuel? Considering that a 767 has a fuel capacity of 11,526 gallons, you'd easily be able to see from space the farm that grows enough sorghum for one tank of gas.

Plants are astonishingly bad at converting solar energy into chemical energy. We should stop trying to do this altogether.

I think the limiting factor would be water. I cannot imagine there is enough fresh water in the world to pull this kinda thing off.

I think global travel in future will be by super-fabulous and elegant ocean liners. With WiFi, it's not like people have to be anywhere immediately. It's not even like 20 years ago. With internet, you can be virtually 10 places in the world at once, including in the middle of the ocean.

The Titanic was only 50,000 horsepower (the power of 200 GMC pickups) and it carried 3000+ people, which would require 6 jumbo jets, which use an unbelievably large amount of power.

Let's get the Queen Mary out of mothballs!

What Ernie said. I'm tired of hearing these half-baked proposals that fail to run the numbers when it comes to actual demand. We have to reduce demand, we can't supply ourselves out of this one.

Ummm, I think that actually reaching $1.80/gallon is a much, much bigger hurdle than receiving ASTM certification.

Get back to us when your costs have dropped an order of magnitude and you are actually knocking on the door of commercial viability.

If any fuel is 15% more energy dense, assuming the same weight per gallon, airlines would jump all over this stuff to cut weight at takeoff. Transcontinental and Oceanic flights would benefit as well with greater range possible.
Most likely, such a fuel would realistically be restricted to use at airports near the point of source where shipping costs of petroleum fuels would be higher. Make and use it in the nation's interior where the military and small commercial airports are located.