I think the solution when it becomes necessary to start rationing fuel is that it will be blamed on the Russians and/or the Chinese and we will go to war.  It will be claimed in the media that the Chinese are stealing "our" oil with some false flag tanker hijackings in the Red Sea.  This will give an excuse for Martial Law to be declared and all the National Guard troops to be called up to maintain order and keep local supply chains for food running.

Internationally, we will reinstitute the Draft, and hijack oil ourselves bound for smaller countries along with stopping sending out food aid.  The whole 3rd world in South America, Africa and SE Asia will be cut off and left to starve.  No news of what is happening out there will be available here.  We won''t know any more about it than the average German knew about Buchenwald, Aucshwitz and Bergen-Belsen.

Then it will be a war of attrition between theChinese, Russians and FSoA as they begin to run short of even rationed fuel and food.  The big goobermints of all 3 nation states will fracture and break into regional powers run by warlords.

Hopefully no nukes will be used, since there's little tactical reason for it.  It's more like a siege war than one fought on battlefields between countries.  Fighting will mostly be internal between different factions and warlords.

In a few years you won't be able to get any ammo and the fighting will be with spears and bow and arrow.  Eventually it will spend itself, and small pockets of survivors will eke out a living scavenging, hunting, fishing and farming.

RE