Honda is testing 200 cars called the FCX Clarity in SoCal that are leased to the drivers. They can go about 240 miles on a tank of H2 (81 mpg).
Fifth Gear Web TV - Honda FCX Clarity Road Test
http://www.youtube.com/watch?v=GaniEb3yAhM
First Drive: 2009 Honda FCX Clarity
http://www.youtube.com/watch?v=c-6B9jYQFm8
I just hope the eco-nuts just don’t find out that water vapor is about 94% of the greenhouse gasses in the atmosphere.