Actually, Shai Agassi will very likely develop workable models and grid. There was an excellent article on him and the project "A Better Place" in
the September 2008 issue.
To see how close to becoming reality this is, I encourage everyone to read it. Here's a link to the online version:
Here is a little something i came across a few weeks ago.
It is about how California tried too push the hydrogen cell car by using public figures like A schwarzenegger and promoting it as if it had advantages
compared to electric battery car. it is a ten part video .