We had fuel cells with twice the energy density of lithium in 2005, and equipment on the bench today has about eight times the energy density.Musk goes on to state that even given the very best hydrogen technology, it doesn’t come close to the energy density of a modern lithium-ion battery pack like that found in the Model S.
http://news.softpedia.com/news/Fuel-Cel ... 6787.shtml
http://www.parc.com/content/attachments ... e_parc.pdf
Horizon Fuel Cell Aeropak - airborne fuel cells exceed 800Wh/kg
http://www.horizonfuelcell.com/#!copy-o ... tions/ccm4
It appears that he, like many here, are looking at only the personal car slice of the picture. I'm not surprised, considering this is an EV forum and most of you are fairly well educated - by a system that's concentrated for more than 100 years on taking things apart to examine progressively smaller pieces.
In case some haven't groked fully yet, we have a serious problem on this planet and we simply don't have time for painfully slow evolutionary processes. We need people that can see things from a systems perspective - from a big picture - and that can take the required steps to help us out of the hole we're in.
Most world leaders that understand this are 'terrified' according to Rifkin, who's been advising many of them for more than 10 years and is the architect of the plan that basically kept Germany out of the worldwide recession that we're still wallowing in. Their ability to understand the reality of the situation we're in is what's motivating far-right conservatives to work with socialists.
This is the most progressive group I've yet seen. If you folks can't wrap your minds around this, I'm not sure there's hope for our country. And that terrifies me.