California vs Texas

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Top five gasoline consuming states, 2015

State Million barrels/day Million gallons/day Share of total U.S. consumption California 0.93 39.14 11% Texas 0.90 37.79 10% Florida 0.49 20.52 6% New York 0.36 15.03 4% Illinois 0.31 13.05 4% Source: U.S. Energy Information Administration, Petroleum and Other Liquids—Prime Supplier Sales Volumes, as of November 17, 2016

Texas is a net producer of petroleum products; California (as well as China) is a net consumer of petroleum products. My bet would be that California and China will come up with a way to reduce petroleum consumption. The self-driving car technology is one of them.