I'm only about a third of the way through, but I'm excited because it's  really good: "Slow Apocalypse" by John Varley; it's just published so it's very new.

It's set in modern-day Los Angeles, and it deals with the end of life as we know it because of a gasoline/petroleum crisis.

No gas, no oil supplies available to the US (this happens very early in the book). That means no electricity, and no motor transportation---which means food runs out, hospitals cannot stay open, water is iffy, and so forth. The story focuses on one family, and how they fight to survive. It's terrific food for thought, in many ways, and very well-written---not crazy stuff, just well-done, dealing with the everyday practicalities.

"swan song" by robert mccammon is great too