Hello.. with a IDEA..

The wind turbine would create drag, more than offsetting the electrical energy it produces.  For it do otherwise would be considered perpetual motion. However, a stationary windmill, used to charge batteries, which in turn could be used to charge an electric car, would work.  You could drive on free energy, created by the wind, or solar panels for that matter, but it would take a lot of them.   

One of the indisputable laws of physics states that Energy cannot be created or destroyed......It can only change form.  So where does the energy created by a vehicle mounted wind generator come from?.........It comes from the energy that you put into the engine to power the car (gasoline).  You have to supply power to push air through the turbine, increasing drag, and then through inefficiencies in converting the wind to electricity, you have losses, therefore getting less power from the turbine than you are supplying with the gas energy.  This is rather a no brainer.  A turbo charger (as i understand it) uses waste exhaust pressure to spin a turbine which raises the compression of the normally horribly inefficient, and underaspirated gas engine and causes it to produce more power, and also to burn more gas (since the gas/air ratio for combustion is a constant).  Again, you don't get something for nothing.   The real advantage with a wind generator is taking the energy from mother earth.........I never got a bill from her for windage, or for geothermal gains. :-)

http://www.evalbum.com/build
I have often kicked around the idea of setting several smaller electric motors in a radial pattern around a central heavy steel flywheel that in turn drives the axle. Maybe six motors with small pneumatic tires making contact with the flywheel. Wired in such a way as to make all 6 available at full "throttle" but as highway speeds are reached and "throttle" demand lessens fewer motors are utilized. The rest going into free spin. Of course regenerative braking would work the same way. As well, hydraulic pump/motor/reservoir systems may or may not be an advantage. The air system you mention could be used as added regenerative braking. As an example, mountain driving, there is always the trip down the other side where all of these regenerative braking implements could come into play. Just ideas though. I guess the real big idea here would be, who's going to pay for it all? It sounds harsh but I am only being realistic. Something I learned from a friend. http://www.cloudelectric.com/home
 In the mean time though, here is somethings for us to drool over, I mean if your into this sort of thing and all.
http://www.teslamotors.com/
http://www.nedra.com/