A pound of bricks or a pound of feathers?

I am sure that many of you have fallen victim to the quick brainteaser: "What is heavier, a pound of bricks or a pound of feathers?" You only fall for it once, but it is great fun in the schoolyard.

Well, despite the laws of physics, I have another one. "Which has more hydrogen, a liter of hydrogen or a liter of gasoline?" Well, the answer is a liter of gasoline. Of course, after thinking about it, you realize that it all involves the density of the substance. However it does have implications on the alternative energy debate. Hydrogen in its pressurized liquid form has far less energy density per liter than gasoline, even though it is much cleaner burning (excluding all of the debate about the power needs to split water molecules into H and O, etc.)



I really want alternative energy, but if you need a pressurized 54 gallon tank in your Hydrogen vehicle (18 gallons x 3) in order to travel the same approx. 360 mile distance as a gasoline vehicle, I am pretty sure America won't adopt it.

I encourage debate, drop me some comments.