https://www.youtube.com/watch?v=WKI4DhIC2DY
https://en.wikipedia.org/wiki/Yellow_Line_(Montreal_Metro)
https://www.youtube.com/watch?v=uDxX0HU3Srg REM
Unlike the 2009 YVR-Canada Line, which is still only running 2 car joke trains, La REM has 4 car trains. Hardly as long as a 9 car Metro train, but it can run with shorter headways.
https://en.wikipedia.org/wiki/Yellow_Line_(Montreal_Metro)#Proposed_extensions
https://en.wikipedia.org/wiki/Yellow_Line_(Montreal_Metro)#Rolling_stock 6 car trains
