https://en.wikipedia.org/wiki/New_York_City_Subway#/media/File:MTA_NYC_Subway_1_trains_at_125th_St.jpg
https://en.wikipedia.org/wiki/R62_(New_York_City_Subway_car)#/media/File:NYCSubway1551.jpg
https://en.wikipedia.org/wiki/New_York_City_Subway#Rolling_stock
https://en.wikipedia.org/wiki/New_York_City_Subway#Capacity_constraints
https://en.wikipedia.org/wiki/New_York_City_Subway#Rolling_stock
https://en.wikipedia.org/wiki/R179_(New_York_City_Subway_car)
#/media/File:NYCSubway1551.jpg){kind=link}