Wait what the heck are talking about,Well as most of you know the Br Class 101(DMU) when they where getting older and worn out and non functional,they might be hooked up to a diesel powered loco and towed as make shift passenger cars. If you want to see another example of this then search youtube for the following video "Der Sylt-Shuttle mit der BR 245" It's a DR BR 245 (Diesel Powered Loco) Pulling wagons with cars/trucks/vans/lorries etc.(aka AIRPORT SHUTTLE). Note:I'm not saying that this video with a db br 628 is a non functioning one but being used as a make shift passenger coach is unexpected if they aren't faulty. But the real surprise is whats tagged onto the end being used to carry the owers of said transports,can you guess what it is?