Looks like this is still in use:

One of the "trains" stopped at a station:

https://goo.gl/maps/5Ju92GQQmPP2

Further evidence, if you start on Google streetmap here you can see one of the trains rounding a curve into one of the high level stations and then departing:

https://goo.gl/maps/oXD8gkXaHcM2

https://goo.gl/maps/VDcCFP9rvAK2

https://goo.gl/maps/Sa17Q5P7FNS2

https://goo.gl/maps/xZsViC3ctER2

One of the air release gates mentioned in the film:

https://goo.gl/maps/Shv8vApiYix