"Oil crunch" doesn't sound right, although it might be appropriate to shale oil: Jeffrey Brown outlines what looks like a compelling thesis on growing domestic energy consumption by major oil exporters. He thinks that the top five producers will be using all their own supplies by around 2030, and concludes that the USA must rapidly reshape its transportation system:
In simplest terms, we are concerned that the very lifeblood of the world industrial economy—net oil export capacity—is draining away in front of our very eyes, and we believe that it is imperative that major oil importing countries like the United States launch an emergency Electrification of Transportation program--electric light rail and streetcars--combined with a crash wind power program.
That is just the tip of the iceberg, surely: residential and office heating/lighting, mechanised farming, supermarket shopping, centralised medical facilities - so much will have to be reviewed and planned.