[buwaya]

With gaseous/liquid H2, you will need energy for refrigeration, costs for depreciation of the very expensive facilities and transport system, maintenance of same, etc.

This needs to come out in the cost analysis, but just because the overall energy efficiency of something like the borohydride system is lower does not mean it is uncompetitive.

[RightWhale]

They are all excited over carbon nanotubes. Strange, but it looks like this could be huge and it won't be made in the USA. Our own tech and we're already SOL.