What is the basis for their claim that their fuels are...

What is the basis for their claim that their fuels are ultra-clean? Is this simply because they are low in sulphur? I can see the environmental and economic sense in UCG, but I can't see any justification for CTL that would negate the increased CO2 emissions. Seems more likely it is being sold as an "energy security" solution, meaning a way to keep a lid on the price of oil and counter-productive to any environmental efforts. Would like to see this company focus its efforts on the power generation side of things and look for other ways to export energy if that is the main reason for getting into CTL.

Interesting link on this here:

http://www.greencarcongress.com/2007/06/cmu_plugin_hybr.html#more