One of the more peculiar trains in Belgium is the AM96 electric multiple unit, used mainly on Intercity services. The blunt, rubber-edged nose makes it feel like some kind of afterthought on another project... and that's kind of the case. The AM96 was ordered at the same time as a batch of Intercity coaches, and the constructor, in this case Bombardier, basically went "ok, let's just build more coaches and motorise them"!
This seems particularly clear on the intermediate car: it really looks like a carriage with a pantograph shoved on top, and presumably the motors and electric equipment are slung underneath. Of course, it's probably not that simple, and there is an interesting feature at the ends: the driving cabs are slender, and can be swung aside when two units are coupled, thus creating a gangway between them. This was first demonstrated on the Danish IC3 Diesel units.
The "just motorise some carriages" has been used since, namely on some latest-generation Dostos in Germany. I do have pictures of the BR 445 Twindexx Vario, but I don't have access to them right now. Another time.
Made it to Lille Flandres. With just a 10min connection thanks to late trains. Our train from Paris, a #TGV #sudest set number 4 stands side by side with #SNCB #NMBS #AM96 no 485. Last train to Calais here we come. #TrainPorn #trainsofinstagram #britishrail #railway #instatrain #ukrailways #railwayphotography #train_nerds #trainsstagram #kings_alltags #eisenbahnfotografie #train_chasers #eisenbahnbilder #railways_de #eisenbahnfieber #trainphotographics #ukrailscene #tpeuk #splendid_transport #seruntulan #ukrenthusiasts #trains_gb #trainspottingpictures #sncfphoto #france (at Gare Lille-Flandres)