I am not so concerned. Once again, I have to point out we are not in an energy crisis, only an economic one. If peak oil disappeared, there would still be plenty of competitive options at our disposal right now that we could utilize. It might set back individuals for the initial costs of conversion, but the "bump" is relatively small.

I am more worried about either a natural pandemic, or a dirty WMD event. Once unleashed there is little that can be done to stop it from spreading and it would be devastating.