That Düsseldorf "SkyTrain", same as the Dortmund H-Bahn! Only with rounded edges on the cars.
Speaking of Dortmund, this is not really about trains, but trams are on-topic enough I think. For a glimpse into the rather grey past (well, it's dated end of December 1991) of this town, have a video of a tram going the full length of the line from the southwest of town to the northeast:
They put like four trains together for this one, each with its own driver. Because of tunnels and spotty mobile reception, they borrowed some field telephones from the Swiss army and installed a line connecting all the drivers, so they could coordinate how much acceleration or braking to apply.