edders23 wrote:
depends how much energy is consumed building it and generating the fuel ?
I think its the ineffiency of making hydrogen that the big problem...if the hydrogen production is powered by fossel fuels then its less green than burning the original fossel fuel directly in a vehicles engine.
If the process is done by using renewable energy such as from wind turbines then it becomes ridicoulsly expensive and would make the hydrogen highly uncompetitively priced for decades to come.
Looks more to me like Green spin than a realistic possibilty....It appears up front to be Environmentally friendly at point of use...yet behind it all it leaves a bigger carbon footprint than a Himalayan yeti burning coal in its slippers..