The MAN GGH GT6 prototype, in the Bremen Tram Museum.
This was the world's first low floor tram which came to Bremen in 1990. Over the time this tram was sent to other towns in europe for test runs (Bonn, Stockholm, Goteborg, Magdeburg, Berlin, Schwerin, Warsaw, Cracow, Poznan, Prague and Amsterdam) but came always back to Bremen.
Until 1998 when it was sold to the town of Norrköping in Sweden. There it served until 2011 when it was given back to Bremen as a present.