https://steamcommunity.com/sharedfiles/filedetails/?id=96336632
The above happened when I “stopped” and restarted the tram whilst it was going up the elevator; the elevator continued to move upwards, but the tram went in a diagonal direction and got stuck in the wall once I started it up again.
Something similar happens during the part with the elevator moving downwards. If you set the train to reverse speed, it will float in mid-air. If you set it to forward speed, it will rise to the top where the elevator started:
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.