Australia's Funicular in the Blue Mountains - Rail or Rollercoaster?

I came across this awhile ago, and I always just found it simultaneously bizarre and impressive. It's Australia's Funicular railway in the Blue Mountains. This is the steepest railway in the world, and to me it literally looks more like an amusement park ride in a way than a method of transit. Here's a 30 second clip where you can see it starting. Notice at the end how the cars all just sort of drop off the steep incline once it gets rolling (sort of like a rollercoaster, no?).

http://www.youtube.com/watch?v=tVLe8NthLnY

It has one of the world's steepest inclines for a railcar, as it descends with an angle of 52 degrees or a gradient of 122%. It also has a section during which it goes through a pitch black tunnel!