General Views Of The Canadian National Railway [Getty Images]

Canadian National Railway Co. (CN) trains pass through the Macmillan Yard in Toronto, Ontario, Canada, on Tuesday, Oct. 18, 2011. CN, the largest railway in Canada, is the country's only transcontinental railway company, spanning from the Atlantic coast in Nova Scotia to the Pacific coast in British Columbia. Photographer: Brent Lewin/Bloomberg via Getty Images

Bloomberg Bloomberg