If and only if you buy both the 24091 and 24094 dump car sets, the freight train can be completed with the 24095 freight train baggage car available free for this purpose. The class 50.40 freight train steam locomotive to go with this is also being offered exclusively for Trix Club members only under item no. 22051.
This freight train baggage car can be found in an AC version in the Märklin H0 assortment under item no. 46982 exclusively for Insider members.