SAPPORO -- The idea of a tunnel for auto traffic between Japan's main island of Honshu with Hokkaido to the north has gained new momentum after years of being considered a wasteful long shot.
Project would allow auto traffic between Honshu and Hokkaido

A proposed new undersea tunnel between Japan's Honshu and Hokkaido islands would have two decks, one for autos and the other for freight trains. (Image courtesy of the Japan Project-Industry Council)
SAPPORO -- The idea of a tunnel for auto traffic between Japan's main island of Honshu with Hokkaido to the north has gained new momentum after years of being considered a wasteful long shot.