This is a good article. However, there are so many companies working on this process that I can't not think that anything GM is doing will helpful. Rather, I think that they would like to get patient filed and contol the process.
It is not to their interest if the market changes to rapidly. Everyone would like to see major canges to bio-fuels in 3 to 5 yrs. Detroit would want to see that process slowed to 10 to 15 yrs, or longer.
GM would like to see affordable cellulosic ethanol (not made from corn or other foodstocks) widely available ASAP and that's what the Coskata-GM linkup is about. That would increase sales of GM's FlexFuel vehicles.
Assuming Coskata's process works as projected, and I see no reason why it won't, it will take many years to build out enough production capacity to displace a serious amount of the world's conventional transportation fuels. But with its outstanding carbon footprint, conversion efficiency, low water consumption and low cost, it can't happen too fast IMO.