BRT is bus rapid transit? Or was that light commuter rail? And when you say designed to carry the weight, that's not true heavy rail like the Port Jervis or Hudson Lines, is it? I know there's plenty of capacity on the PJ Line, I was wondering if the Twitter poster is correct that it is technically feasible to connect it to the Hudson Line via Suffern, Nyack, and the new bridge and running MetroNorth trains. The new bridge climbs from the Nyack side to Tarrytown; I also wasn't sure if MetroNorth trains can handle that.