• Caption: 8663 is one of the bar cars used on Metro-North's New Haven Line. The bar cars are a variant of the M2 cars, which usually only run on the New Haven Line unless there's an equipment shortage on the Harlem and Hudson lines. There has been some debate as to whether to have some of the forthcoming M8s equipped as bar cars, or to end that service (the last in the country) when the M2s are retired. (September 14, 2010)