Top Definition
A situation when your car is running on nothing but fumes and prayer to get you to the cheapest gas station.
Kid 1: God, the other day my dad drove all the way to Costco on an empty tank just 'cause gas is cheaper.
Kid 2: Sounds like he pulled a hail mary tank.
by Runebirdie June 17, 2008
5 Words related to Hail Mary Tank

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