The main story of the source article here is the Shell Synfuel, "a gas-to-liquid propellant manufactured from natural gas that's entirely free from sulphur and aromatics. When burned, Synfuel produces 35 per cent less soot, 93 per cent less carbon monoxide, nine per cent less nitrogen oxides and five per cent less carbon dioxide than conventional diesel fuel. Unlike diesel, it produces no sulphur dioxide at all."
But, a side point worth noting is that the A8 TDi was being shown in New York at the C40 Climate Summit. The last time I checked, this engine was not available in the A8 here in the U.S. of A. Too bad, because it could have an impact exactly like what is being spoken about at that same summit. It's a tad bit ironic, don't 'cha think? A little too ironic, and yeah I really do think... ok, enough.
Thanks for the tip, Christian!
[Source: Autocar via German Car Blog]