I'm no expert; but, there are some really exotic
proposals:
http://alt-e.blogspot.com/2004/12/wind-power-laddermills-high-altitude.html
That is strange! That thing is mechanical?!? It says the kites turn a large wheel on the ground. It is hard to believe any material would be strong enough for the cable. It has to be light enough to reach five miles in the sky, and it has to bear the mechanical stress of driving a 100 MW generator. If you have material that can do that, you might as well use it to build a space elevator and fix the energy problem grand style.
There is another article on this site about plug-in hybrids:
http://alt-e.blogspot.com/2004/12/future-of-car-plug-in-hybrids.html
- Jed
