Inside the nostalgia train. (Photo via bifteck's flickr)

Every once in a while an old train is pulled out of retirement for nostalgia's sake, and this weekend the R1/9 subway cars (also collectively known as the Arnines) were transporting passengers once again on the M line. These were built in the 1930s and '40s, and retired in the 1970s. Below you can get a conductor's vantage point, from the Essex Street station to Metropolitan Avenue, giving you both an underground and elevated view, with a trip over the Williamsburg Bridge. Turn the volume up for some occasional banter about the old days.

And here's one from earlier this month passing through a station:

Here's the upcoming nostalgia ride schedule. [h/t Reddit]