Color Changing Train Wondermug Coffee Mug
![Color Changing Train Wondermug Coffee Mug](http://railroadcatalog.com/cdn/shop/products/23073_1024x1024.jpg?v=1579655695)
Take a ride through history as the big black steam locomotive disappears to reveal six different scenes from one of the earliest engines to the modern "bullet" train. This fascinating 11-ounce porcelain color-changing Wondermug activates when drinking a hot beverage.