His plan is basically use more wind for electricity power, free up the natural gas for transportation (automobiles). Currently natural gas cars are still not as versatile as gasoline cars. But I have seen and heard natural gas powered taxi in Shanghai, and gas powered bus in the States. Natural gas is more environmentally friendly compared to oil, but natural gas taxi has to carry a big gas bulb in the trunk, i.e., less trunk room for cars.
Note Pickens has a big investment in wind power and water resource in Texas.