Try putting a windmill or solar cell on your car and see how far you get.  Windmills have nothing to do with reducing our use of oil; they only slightly reduce our use of relatively clean natural gas at a ridiculously high cost.  It is far  better just to use the natural gas alone and forget the windmills, which are a nightmare to integrate into the grid and they cause great environmental damage.  Coal is a dirty fuel that kills thousands of people every year due to particulate pollution, not because of CO2 output.  The real replacement for fossil fuels has to be a safe nuclear solution because only nuclear reactions have an even higher energy density than fossil fuels.  HIGH ENERGY DENSITY is essential to maintain a small ecological footprint.  Old style reactors are too dangerous.  The future lies in simplified hot fusion technology and Low Energy Nuclear Reaction (LENR), which does not use any radioactive materials at all.  For details, Google *The Fusion Revolution*.