U.S. President Barack Obama (R, in lead car) takes a golf cart tour with a mini-motorcade behind him at Papahanaumokuakea Marine National Monument, Midway Atoll, U.S. September 1, 2016. REUTERS/Jonathan Ernst

U.S. President Barack Obama (R) rides in a golf car with Marine National Monuments Superintendent Matt Brown on a tour of the Papahanaumokuakea Marine National Monument, Midway Atoll, U.S. September 1, 2016. REUTERS/Jonathan Ernst

U.S. President Barack Obama (R, in far right golf car) rides in a golf car motorcade on a tour of the Papahanaumokuakea Marine National Monument on Midway Atoll, U.S. September 1, 2016. REUTERS/Jonathan Ernst

Welding robots are pictured in a Golf VII production line at the plant of German carmaker Volkswagen in Wolfsburg, Germany May 20, 2016. REUTERS/Fabian Bimmer/File Photo

Britain Golf - Aberdeen Asset Management Scottish Open - Castle Stuart Golf Links, Inverness, Scotland - 9/7/16 Scotland's Russell Knox in action during the third round Action Images via Reuters / Jason Cairnduff Livepic

Men's Individual Stroke Play - Olympic Golf Course - Rio de Janeiro, Brazil - 12/08/2016. Martin Kaymer (GER) of Germany chips on to the 18th green during the second round of the men's Olympic golf competition. REUTERS/Andrew Boyers

Thomas Pieters of Belgium reacts during the Made in Denmark, European Tour golf tournament, final round in Farso, August 28, 2016. REUTERS/Henning Bagger/Scanpix Denmark

Emblems of VW Golf VII car are pictured in a production line at the plant of German carmaker Volkswagen in Wolfsburg, February 25, 2013. REUTERS/Fabian Bimmer/File Photo