2009 DIESEL Trackmaster Thomas & Friends Motorized Tank Engine Train by Mattel. This black plastic train features the character Diesel from the Thomas & Friends franchise, specifically designed for the TrackMaster line of toys. With battery power, this collectible item is part of the Cartoon & TV Character theme and was manufactured between 2000-2009. It is an action figure representing the beloved Thomas & Friends characters, perfect for fans of the TV show.