Wrong!
Again, you aerospace engineers are out of date on the technology. GM developed one three years ago.
http://www.gm.com/company/gmability/adv_tech/400_fcv/hydrogen_milestone_021003.html
GM Hydrogen Storage Breakthrough Extends Fuel Cell Vehicle Range
First to reach 10,000 PSI milestone in compressed hydrogen storage
SACRAMENTO (Feb 10, 2003) – General Motors Corp. today announced that it has increased the driving range of its compressed hydrogen fuel cell vehicles with the world's first successful vehicle test of a 10,000 PSI (700 bar) hydrogen storage system.
