[pp.int.general] [Energy Policy] Hydrogen based fuel-economy by using only the sun

[Richard Stallman]

    But, the usual problem: 1 kW/m^2

There are lots of m^2 in the Sahara desert.  And in Spain, even.

-- 
Dr Richard Stallman
President, Free Software Foundation
51 Franklin St
Boston MA 02110
USA
www.fsf.org  www.gnu.org
Skype: No way! That's nonfree (freedom-denying) software.
  Use Ekiga or an ordinary phone call