I’m a bit of an U-Bahn and S-Bahn geek. This is probably because I make 5 or 6 train journeys every day in Berlin, and I come from the countryside where there is a bus to town once every 2 hours. Even then only about 3 people get on.
In Rathaus Neukölln station the other day both trains came in at the same time, they were the different kinds of train (older and newer) and I managed to snap a [somewhat] symmetrical shot before I hopped on my way to work. Hope you like it.