As a New Yorker, this gets me very excited: the Bedford Ave L station just got an LCD screen that shows exactly where all the cars on the line are, so you know how long you'll have to wait.
It's part of a test program on the L line, where they installed boards telling people when the next train would arrive last year. This is just the next step. If it goes well, presumably, they'll expand it to other lines as well. Like the Q! Bring it to the Q, MTA! Please! [Gothamist; pic via Kate Heffernan]