No train is complete without a caboose - and train sounds should be no different! These new cars play the sounds of the rolling train in motion and are also programmed with user-activated dialog and radio chatter. There's even an air whistle to protect those back up moves! These action-packed cars also feature LED illuminated interiors and marker lamps, an ElectroCoupler, Track IR sensor for use with SensorTrack, die-cast trucks and separately applied details to make them look as good as they'll sound. Why should the engineer have all the fun? Now you can give a voice to the conductor - he's in charge after all!