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1 mile = 1.609344 kilometers. 1 gallon = 3.785412 liters.
Transport Canada. Environmental Programs. Fuel Consumption Program (custom tabulation).
National Commission for Energy Efficiency (CONUEE) with official fuel efficiency data provided by Mexican Association of Automotive Industry (AMIA).
U.S. Department of Transportation, National Highway Traffic Safety Administration, Summary of Fuel Economy Performance, available at http://www.nhtsa.gov/fuel-economy.
Source is as cited in U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics, table 4-23, available at http://www.bts.gov/publications/national_transportation_statistics.