This wonderful Puzzle Vehicle Track is a 16-piece set, combining creative and educational fun. All of the interchangeable track pieces can be linked together, to make up to 50 different track combinations. Each set comes with either the recognizable red London bus or London Black Taxi, Detailing all the favorite tourist destinations in London. It?s also available as Fire Engine Puzzle or Train Puzzle. this is a fun way to develop problem solving, motor and language skills. Requires 1 x AAA battery (included).