Indeed. It's mostly an article about Warsaw getting some new subway cars[1], which isn't particularly interesting vehicle (well, it is, but they are so much same for anyone outside the engineering/railfan world), so they had to come up with some catchy headline… Most subway cars in the world are "recyclable" in the same manner (and perhaps even efficiency). I don't see anything very special here, it seems to be just a modern lightweight subway car, made mostly from aluminium.

[1] Not interesting enough to make it to HN, IMHO.