Sure, but the amount of oil needed for that is completely dwarfed by other uses of oil. See e.g. http://www.eia.gov/energyexplained/index.cfm?page=oil_use http:

Sure, but the amount of oil needed for that is completely dwarfed by other uses of oil. See e.g. http://www.eia.gov/energyexplained/index.cfm?page=oil_use http://www.eia.gov/energyexplained/index.cfm?page=oil_use