An alternative to waiting 10 years:
There are green gasoline products available now, and have been successfully used. "Use The Right Stuff" by Buy Green Gasoline has been cutting down emissions, requiring less gas, less oil, and have been giving more output than just gasoline alone.

“The Right Stuff” technology alters the fuel structure and increases engine compression so more of the fuel is burned. With “The Right Stuff”, the engine actually operates at a lower temperature, reducing emissions, and resulting in more miles per gallon/miles per tank.

I use it and it is amazing.