Greatest Show Under Wire. On May 10, 2017, the eyes of railfans turned the Northeast Corridor Line as the Norfolk Southern Corp 047/Conrail Shared Assets OI-17/Ringling Bros. and Barnum & Bailey Circus Blue Train made its final run to a performance. Somewhere midtrain, RBBX 40016/166 was approaching the North Elizabeth Station in New Jersey, just one of dozens of cars on a train that at various times carried people, animals, vehicles, and uniquely a "pie" car.