Note that I said we need to do more than just raise gasoline and diesel fuel prices and also do it gradually and yet relatively quickly.
Just raising fuel prices will simply harm the poorest, so we need to totally restructure the US. In this case 'relatively quickly' would likely be a 50 year period; gradual will allow the citizens to adjust to the changing restructuring.
In general, the US has been on an expansionist phase for about a half century, beginning with the 'Levittowns' and the Interstate Highway system, the creation of 'suburbia' and the advent of the 'Harrundale Mall'. It would take at least as long to consolidate and return back to an Urban and Rural standard.
We need to move away from suburbia and back to a supportable structure, one where the car is really not a major factor, where most everything anyone needs is available within walking distance, where jobs are local, where most of the land is used for productive purposes instead of roads, parking lots and as a foundation for a single family home.
We need to urbanize our population and then interconnect the urban areas with high speed rail networks, and provide real mass transit within the urban areas. We need to look back to Europe and learn how to actually be civilized.
Anyone so limited that they can only spell a word one way is severely handicapped!