[Pessimist]

"some of them clean and renewable"

The accent there should be on SOME.

My brohter in law is a chemist, and he tells me that getting it from natural gas yields a bi-product of CO2.

Not so nice, Huh?

[hoosiermama]

See post above.....Have been following the development since the founder was recognized in 2000. Lots of progress since then. "W" greeted a car made with their product at the WH last year....It had driven cross country from CA....again the only bi-product was H2O. Modified commercial car....FOrd or CHevy IIRC.

[John Locke]

Your brother-in-law is correct. Natural gas is about 95% methane, and you get hydrogen by combining it with steam:

CH4 + 2 H2O => CO2 + 4 H2

If you also do the math on the energetics, including the huge energy losses in using hydrogen as the carrier, you'll find that for the same amount of "gas mileage" you generate more CO2 from the natural gas than you would from gasoline.

[Leo Carpathian]

My brohter in law is a chemist, and he tells me that getting it from natural gas yields a bi-product of CO2. Not so nice, Huh?

My brother in law is a jerk and says that we could drink selzer with CO2 instead of plain water, methink mucho nicer!

[Octar]

My brohter in law is a chemist, and he tells me that getting it from natural gas yields a bi-product of CO2.

I am a chemist and your brother-in-law is correct. In addition, the process of "extracting" hydrogen from natural gas wastes most of the energy pontential inherent to natural gas. It also requires energy from some other source to accomplish this stupid process. It's dumber than the ethanol scam, but don't get me started, it's bedtime.