There is not going to be a "hydrogen economy," and no combination of alternative energy systems or fuels will allow us to continue the suburban pattern. It's finished. We will, however, desperately need to grow more of our food closer to home, and so the preservation of agricultural hinterlands is of great importance. But don't expect the fiesta of suburban construction to continue more than a few more years.
There are an awful lot of readers who won't pick up a book if they think it's got anything horrific in it, or paranormal or whatever.