You may be thinking of the M-Bahn: https://en.m.wikipedia.org/wiki/M-Bahn - thou...

		brazzy 8 months ago \| parent \| context \| favorite \| on: Riding high in Germany on the world's oldest suspe... You may be thinking of the M-Bahn: https://en.m.wikipedia.org/wiki/M-Bahn - though fits almost none of the details:)