Why act now to develop clean, renewable liquid fuels made from carbon wastes and biomass at a community or regional level? It’s simple. Your kids’ and grandchildrens’ gas tanks (and wallets, if they still exist) could be empty in twenty years if we don’t. 
Look at the graph and be afraid. It did not come from Earth First! It did not come from the Sierra Club. It was not drawn by Socialists or Nazis or Osama Bin Laden or anyone from Goldman-Sachs. If you are a Republican Tea-Partier, rest assured it didn’t come from a progressive Democrat. Or vice versa. It was drawn by the United States Department of Energy (DOE), and the United States military’s Joint Forces Command concurs with the overall picture.
What does it imply?
The supply of the world’s most essential energy source, liquid fuels, is about to go off a cliff. Production of all current liquid fuels, including oil, will drop within 20 years to half what it is today, according to reputable sources. The difference needs to be made up with “unidentified projects,” which one of the world’s leading petroleum geologists says is just a “euphemism for rank shortage,” and the world’s foremost oil industry banker says is “faith based.”
How to solve the problem?
Stop waiting for the renewable liquid fuel solution to come from somewhere else. This isn’t going to happen. The answer is, like all politics, local. The key to the sustainable energy solution is where you live in the wastes and biomass resources that surround you. But you have to want it for it to happen.
Wake up and smell the trash can and go out and rake your yard and think about what’s at stake here.
Source: http://www.eia.doe.gov/conference/2009/session3/Sweetnam.pdf