Fuel shortages are unlikely to be a serious risk for centuries. Hydrocarbon reserves are measured in the trillions of barrels (in the US alone) and the differen

Fuel shortages are unlikely to be a serious risk for centuries. Hydrocarbon reserves are measured in the trillions of barrels (in the US alone) and the different types are largely fungible at <$100 barrel inasmuch as you can convert them all into fuel. We may greatly reduce hydrocarbon fuel usage but it won't be because we ran out in my lifetime.