Seems that the proposal for a Second Avenue Subway was pretty well-received at the hearing last night, though there are concerns about quality of life as well as it being too Manhattan-centric.
But there is some existing tunnel, started from a failed 1970s attempt at a subway line, along Second Avenue: Between 99th and 105th streets, between 110th and 120th streets and under Confuscius Plaza in Chinatown. Gothamist was amused by previous suggestions for what to do with the tunnels, if not used for subways: "bocce courts" or "the world's largest wine cellar."
Gothamist on the possibility of a Second Avenue Subway
