This machine is called RU-800 S, is 177 meters long and weights 692 tons. It's made by an Austrian enterprise called Plasser & Theurer. This is the only one and unique machine in the world which can make rail. It's very impressive how massive it is. I bet it's more louder than an airplane taking off... I'd love to see it in action for real but all i have to show you is this cool video.