If hydrogen is the car fuel of the future, it will be sold in kilograms, a
major (and stealthy) coup for NIST and US metric advocates. However, while
gasoline will eventually go away, H2 might never catch on due to advances in
battery technology, which could make electric cars more practical. Sadly,
my guess is that this will happen, but here's an article arguing otherwise:
http://hydrogendiscoveries.wordpress.com/2009/02/19/fallacy-of-energy-efficiency-argument-against-hydrogen-fuel-cell-vehicles-by-plug-in-battery-advocates/
and another:
http://www.autobloggreen.com/2009/03/03/retech-2009-hydrogen-proponent-sandy-thomas-says-fuel-cells-bea/
On the flip side, there's a company called EEStor in Texas that claims to
have developed an ultra capacitor that will power a car for decent range,
and unlike batteries can be recharged in minutes and will never wear out.
If that's for real (no prototype has been demonstrated) goodbye H2 as the
car fuel of the future and a fleeting victory for the kg.
http://gm-volt.com/2008/03/28/zenn-says-eestor-ultracapacitor-powered-car-for-launch-fall-2009/
