A never realised project from the 80's : the Berlin M-Bahn
Testride in Berlin in 1989
Where the tracks should be built back then:
Platform in the Gleisdreieck station
view to the gliding system from the end of the M-Bahn:
More info on the M-Bahn & Maglev line (Hamburg-Berlin) on pdf:
http://www.berliner-verkehrsseiten.d...hn/m-bahn.html