Not long ago, selling American cars in Japan was downright quixotic. The U.S. vehicles were known for lousy quality, high prices and crummy service. But no longer. Hisashi Honma, a 22-year-old salesman at a Ford dealership near Tokyo, can't get enough Mustangs, Tauruses and Mondeos for all the customers who want to buy them. One ordered a European-made Ford Mondeo wagon last month, even though he will have to wait three months for delivery. In May, Ford imported 2,500 of its muscular new Mustangs; they sold out in two months.
By the end of this year, Detroit's Big Three expect to...