The problem with Hydrogen and electrically powered cars is the power still has to come from somewhere - the usual supects - coal, oil, gas still accounting for 90% - so where the heck is the CO2 saving.
Driving an electrically powered car does allow you to turn your eco piousness halo up to high beam (like half of the idiots in Hollywood - clueless as to the physics).
We need "Smug" reduction laws for these people.
This is the Oregon petition :-
"We urge the United States government to reject the global warming agreement that was written in Kyoto, Japan in December 1997, and any other similar proposals. The proposed limits on greenhouse gases would harm the environment, hinder the advance of science and technology, and damage the health and welfare of mankind.
There is no convincing scientific evidence that human release of carbon dioxide, methane, or other greenhouse gasses is causing or will, in the foreseeable future, cause catastrophic heating of the Earth's atmosphere and disruption of the Earth's climate. Moreover, there is substantial scientific evidence that increases in atmospheric carbon dioxide produce many beneficial effects upon the natural plant and animal environments of the Earth".
This was signed by over 14000 scientists at the time of Kyoto - it now stands at 31478 - of which some 9029 are PhD's and 3803 PhD's in climatology, atmospheric or earth sciences. The Oregon petition is not the only one.
http://en.wikipedia.org/wiki/Heidelberg_Appeal
Over 100 scientists including Nobel Laureates as well as current & former IPCC scientists wrote an open letter to President Obama pointing out that his stance on global warming was simply not true.
http://climaterealists.com/index.php?id=3133
The main petitions are: The Oregon Petition (31,000 accredited scientists), The Heidelberg Appeal (4000 signatures including 62 Nobel prizewinners), The Manhattan Declaration (600 research climatologists), The Petition to the United Nations (100 geoscientists), Petition to the Canadian Prime Minister (60 climate experts), The Leipzig Declaration (100 geoscientists), The Statement from Atmospheric Scientists (50), Petition to the German Chancellor (200 German scientists), Statement from the American Physical Society (150 physical scientists), Petition to President Obama (100 leading climate researchers), UN Climate Scientists speak out on Global Warming (700, many previously involved with the IPCC). All are critical of the notion of man-made global warming, and all of them (with signatures and accreditations) are accessible via Google.
If you want to save the earth - first take a science course.
There is no proof of man made global warming - none whatsover - based on the laws of physics.
The "overwhelming evidence" is without exception based on computer modeling which in turn is based on faulty correllations.
Example: the correlation between temperature and CO2 has the "inconvenient truth" of an 800 year time lag between temperatures and CO2 increaces - so if you use this otherwise significant correlation in your model you clearly believe in time travel in that you must believe if you add CO2 to the atmosphere today you will make it hotter yesterday.
Pull the other leg its got bells on.
Sorry about the rant.
Ken