The US has enough coal to meet our domestic energy needs for the next 120 years. So all we need is cost-effective electric vehicles and a shitload more powerplants to end our dependence on foreign oil.
You can be damn sure that there are government strategists who are well aware of this and will move us in that direction when the time is right.
But to play the game for full effect, we want to run the rest of the world out of oil first; eppecially when it's the least expensive option. Then our domestic reserves will be all the more valuable and we will remain the dominant world power for at least a couple more centuries.
When oil gets so expensive that people's standard of living takes a plummet, wait and see how fast the envirnomentalists get steamrollered and a bevy of new coal powerplants gets green-lighted.