From what I've been reading in the past couple of weeks, a number of these concerns either have been or are in the process of being addressed.
The key reason for hydrogen is that it can be produced via solar, wind or hydro-power in one place, then shipped and consumed in another, with relatively low loss. There are several good books on the subject and the innovations needed to make it completely viable.
The oil industry is competing with this, actively, with a biofuels move. If you look at the purchases of Exxon and other oil companies over the past several years, you'll notice how many acres of corn fields they've bought.
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The key reason for hydrogen is that it can be produced via solar, wind or hydro-power in one place, then shipped and consumed in another, with relatively low loss. There are several good books on the subject and the innovations needed to make it completely viable.
The oil industry is competing with this, actively, with a biofuels move. If you look at the purchases of Exxon and other oil companies over the past several years, you'll notice how many acres of corn fields they've bought.