Re: Bush Backs Fuel Cells (not just the hydrogen idea).
I thought this was interesting:
Zinc Air Fuel Cell Technology
The Cell
The cell comprises a central static replaceable anode cassette comprising a slurry of electrochemically generated zinc particles in a potassium hydroxide solution compacted onto a current collection frame and inserted into a separator envelope, flanked on two sides by high-power air (oxygen) reduction cathodes that extract oxygen from the air for the zinc-oxidation reaction.
http://www.electric-fuel.com/evtech/index.shtml#battery
“all-electric transit bus”
http://www.electric-fuel.com/evpro/usa.shtml
Potent stuff: http://www.meto.umd.edu/~russ/MSDS/potassium
Still, the idea of an all-electric-zero emissions bus is a good start!
Marcia