Caption: Roaring westbound through the city limits of Brampton and Mississauga, three rebuilt CN SD40's haul a long 399 upgrade between Torbram and Goreway, past Torbram Yard off to the right. Leaders CN 6020 & 6016 were remanufactured by CN as upgraded SD40u units, trailing unit WC 6944 was rebuilt as an Alsthom leaser, before it was then leased back to CN and sublettered WC. Today the 6000's are relegated to road and yard duties across the CN system, and the former WC/GCFX units have been sold off and spread across North America.