Theorize at where oil deposits may be under 2 miles of earth, Float or erect an oil rig out to sea or a remote point of the earth, drill through miles of rock to tap into oil deposits, pump up oil deposits. Load on truck or barge and float or drive the crude to a refinery to make gasoline from the crude, drive or float finished product to gas station and deposit in underground storage tanks to be pumped into cars to use. At $4 a gallon that sounds pretty reasonable. But then again I don't commute.