Do younunderstand that a pipeline construction is a HUGE capital expense? The reason crude by rail is popular is because it uses mostly existing infrastructure... minimal timeframe to construct a transload siding... minimal expense... which works when at any time the Arabs can flood the market and destroy it all... which is currently happening.
Consider that the rail transport for grain is not being properly delivered due to oil tank-age transport.
http://seattletimes.com/html/businesstechnology
/2024172633_columbiatrainsxml.html
http://www.startribune.com/politics/national/274954641.html