Once upon a time the NAFTA Superhighway/Trade Corridor was just a conspiracy theory.
Then it was a gleam in Manitoba Premier Gary Doer's eye. From his 2007 Speech from the Throne :
"Manitoba is also taking a major role in the development of a Mid-Continent Trade Corridor, connecting our northern Port of Churchill with trade markets throughout the central United States and Mexico. To advance the concept, an alliance has been built with business leaders and state and city governments spanning the entire length of the Corridor."
That alliance was the Ports-to-Plains Trade Corridor, a lobby group comprised of US and Canadian elected officials and business leaders, and SPP luminaries like Ron Covais, chair of the US end of the North American Competitiveness Council.
Later it showed up as a useful map on an Alberta government website - see above.
Now, according to the Government of Canada website, it's "a new job-creating investment contained in the Harper Government’s Economic Action Plan" :
"The CentrePort Canada initiative involves using the James Armstrong Richardson International Airport and surrounding land as a hub to import goods from Asia and Europe and then distributing those goods throughout North America by air, rail and road. The governments of Canada and Manitoba are jointly funding the next phase of this project, which involves building a high-speed transportation corridor.
It serves as a natural connection point between Atlantic shipping lanes and the Asia Pacific Gateway and as the northern terminus of the fast-growing mid-continent trade corridor, with the potential to expand to take advantage of trade opportunities in Canada’s North."
Sigh. They just don't make conspiracy theories like they used to.