All this is just pure frame. 0.4$/L is still more expensive than gasoline !
A typical hydrogen car will consume approximately 3.7 times more fuel to generate the same amount of energy. So you guys choose : paying 1.20$/L of gasoline or 1.48$/L for liquid hydrogen ?
http://en.wikipedia.org/wiki/Fuel_efficiency
Please note that I'm not only talking about money here... not the advantages/disavantages of both technologies...
You are talking about the efficiency of Liquid Hydrogen which is stored at a very low temperature! This is room temperature hydrogen, which creates a bigger explosion if we take the same amount of gasoline!