Detroit dreams of a day when American cars on Japanese roads would be more visible. Considering Japanese cars take a wide portion of US car market, why is it so hard for American car brands to do the same on Japanese market? American auto executives and trade negotiators and has become a renewed source of political friction under President Trump. Trump accuses Japan of shutting American producers out, by throwing up regulatory barriers and rigging the currency market in favor of Japanese brands. Such talk is alarming in Japan, where theauto industry is a pillar of the economy. When Prime Minister Shinzo Abe meets Mr. Trump starting on Friday, averting a trade war will be at the top of his agenda. Of course American cars don’t sell in Japan, that’s what Mr. Masui said, whose admiration for American vehicles does not extend to their manufacturers’ marketing strategies. American cars have a bad image — they aren’t fuel-efficient, they break down, he said.