Does the United States have 2 trillion barrels of oil?
The ad appears to be referring to the Green River Formation, a giant untapped oil shale deposit in Colorado, Utah and Wyoming.
A 2005 report by the RAND Corporation, a nonprofit think tank based in California, estimated that the Green River Formation holds between 1.5 and 1.8 trillion barrels of oil, of which roughly 800 billion barrels are recoverable.
"Present U.S. demand for petroleum products is about 20 million barrels per day, so 800 billion barrels would last for more than 400 years if oil shale could be used to meet a quarter of that demand," the think tank noted in a brief.
However, it added that there are technical problems.
"Assuming the private sector decides to invest in oil shale development and production, we expect that an oil shale industry capable of producing more than a million barrels per day is at least 20 years off," it said.