InnoTrans, the world's largest rail trade fair, opens today in Berlin. 124 new rail vehicles will be presented on 3.5 km of track. RailAdventure has brought some of them to Berlin.

Märklin's gauge 1 locomotives of the class S 2/6 or class 15 have a coal load in the tender that appears to be decreasing. What is the technology behind this?

Märklin's fall novelties for Gauge 1 are big and heavy. In addition to the green Köfferli, there is also a German electric locomotive that is still in use today.

If you want to pass the time while waiting for the Märklin novelties, I have something for you. Alstom is currently touring Germany with a multiple unit train that draws its energy from hydrogen via fuel cells. As far as the hydrogen goes.