Do fuel cell vehicles demonstrate greenness?

Isn't there so much more that could be done today?

Fuel cells cars are cool, and I can't wait until they are a cost-effective reality for the world's auto consumers. Unfortunately, that could be decades away. Even so, it's important to keep pushing the technology because we might just discover other technologies as we trudge along.

Still, is it proper to call fuel cell technology 'green' at this point in time?

"Hyundai is doing its part at this year’s Frankfurt auto show to stay green and competitive with the i-Blue fuel-cell electric vehicle. In an effort to further cut emissions and use of fossil fuels, it is among many automakers looking to hydrogen, the most common element in the universe," writes Car&Driver.

To date, fuel cell vehicles have been an excuse not to be green today. So, how exactly does a fuel cell debut, such as the Hyundai fuel cell concept pictured above, demonstrate any sort of green behaviour?