That's the Tiroler Zugspitzbahn, a cable car which goes from Ehrwald in Tirol to the Austrian side of the summit.
There is a second cable car from the Eibsee station near Garmisch, which goes to the German side of the summit. That one is operational at the time
Third, there is a cog railway, which goes from Garmisch over Eibsee to the Zugspitzplatt, a ski region a few hundred metres below the summit. From that Zugspitzplatt, there goes a third cable car up to the German side of the summit.
To make things more complicated, there is a fourth cable car under construction, which is to replace the Eibsee cable car in 2017. (And of course, there are even more cable cars for inspection purposes and material transport.)
Oh, and you can go from the German to the Austrian side of the summit by foot. A five minute stroll.
EDIT: Ah, you wrote September. No worries, 07.11.2016 is November. German dates are formatted dd.mm.yyyy.