I drove 1800 miles in a Hydrogen Car

When considering the efficiency remember it is not always valid, although it provides targets for improvements. From memory the Internal combustion engine extracts around 18% of the energy in the fuel/gas but you never hear it criticised as much as renewable sources. Solar cells at best are doing 20% efficiency except for the expensive ones used in space, ie they only convert 20% of the energy in light to useable energy.  The point is 20% of something is 20% more than nothing, and solar and wind cost next to nothing. The full picture is established by looking a the whole system including the embedded energy, mining and collection, leakage and wastage, health impacts and other externalities. Then the cost vs benefits a user may use to choose, may still be excluding externalities. If the fossil fuel energy sources paid for their impact they would be much more expensive.

An important aspect of hydrogen is also its weight, you carry very little weight with a full hydrogen vehicle, I believe as little as 5kg with Fossil fuels about that of 75% the weight of water (per litre) eg 40kg for a tank.

Hydrogen key benefits is its energy to weight ratio, its high intencity. Of course the details about how we make it in the form we need is the big question.  As a result Hydrogen stands to be the missing component of transferring renewables into transport and into high energy systems like smelting and glass production. It may also server as a high density storage method. 

I am yet to explore the details but a hybrid Battery/Hydrogen/electric car may prove ideal from reducing range anxiety through to improving health in high traffic areas (any city) to name a few. 

Our economies can only prosper with such innovations and we must stop propping up the old ways. There is no reason the fossil fuel industries can not prosper from this innovation them self, after all it is just business. To defend the indefensible, is to also be indefensible.