Central Japan Railway Co.'s project to build a magnetically levitated (maglev) train system re-entered the spotlight Sept. 18 when it unveiled the details of a route scheduled to open between Tokyo and Nagoya by 2027.

The announcement by JR Tokai, as the private railway is known, has revived a number of long-standing doubts about the massive high-tech project, including its profitability.

Will it succeed financially? Here are some questions and answers about JR Tokai's Linear Chuo Shinkansen project.