RE: Hydrogen Fuel Cells * I can just see it, some years into the future:

"This is a city traffic advisory. City officials are asking everyone to brave traffic, to get out on the roads and drive in an effort to help avert drought by increasing the moisture content in the air. Please turn on every appliance in your home to increase the power load on your neighborhood generator, as well."

On the other hand, there's the prospect of 110 degree days in Phoenix with 50% humidity. *shudder*