[narnianal]

Sorry, was busy with work a few days.

Well, the answer is not as easy as "biofuels". Where do the "biofuels" come from (e.g. cow shit might have enough energy if filtered correctly, but we already have too many cows on this planet with direct impact on the environment)? How are the fuels processed? How much of the final output is from device and material production and how much from actual usage? Think solar power here. For quite some time (I hope not anymore) the emissions produced while making solar panels was bigger than the savings the solar panels generated.

So the problem is quite complex actually. It would really make sense to set shorter intermediate goals and show how they can be accomplished in a competitive market. If they become the goodest good guys and then lose for not making a profit the world isn't better off either.