This is a long-selling product from Tomy, which has been over 40 years since its launch.The original model was "Plastic Train Rail Set" released in 1959 and was intended to roll and play with your hands.Since then, we have done improvements such as making it easier to assemble and eliminate breakdowns, but there are no basic changes to the model.In the 1960s, we released a 3-car model with a built-in small motor, and now cars are the basics of 3 cars.Children of 3 years old can play on their own, add a rail layout to run and create a large layout where parents can join together to create a city, and have great freedom of play.