OT: I researched the savings to American pockets. Going from $4&#x2F;gallon -&gt; $2&#x2F;gallon saves American $500 Billion annually. I included the savings from the cost of food as well (food cost had a direct correlation to oil prices).<p>How much of that is going to be pumped back into the economy is unknown, but the amount is sizable.  
You would also expect, some amount of savings globally on food and fuel. So net, this might give the global economy a bit of a boost.<p>OT OT: It also surprised me why Obama administration never, framed the Iran Nuclear Deal as a $2&#x2F;gallon or $1&#x2F;gallon victory for American people. It would have been more sticky.