You're waiting for a train, a train that will take Ты far away. Ты know where Ты hope this train will take you, but Ты don't know for sure. But it doesn't matter. How can it not matter to Ты where the train will take you?
But Ты don't know where the train will take you,it might stop before circling the globe...which is full of great stretches of water...which no railroad has yet to be built that crosses any sea.