According to the study, 200,000 new jobs could be created and six million metric tons of carbon emissions could be reduced. By a 2017 estimate, the project could cost between $24 billion and $42 billion, but could create $355 billion in economic growth.

https://www.thenorthernlight.com/stories/wsdot-study-envisions-ultra-high-speed-transportation-between-seattle-vancouver,8304