This file contains the prefab library of almost every vehicle used in Half-Life (with the exception of the Apache and F16). I don't think that the file has been made up of vehicles from decompiled HL levels but they are very good replicas of the origional vehicle. I didn't make any of these - I downloaded this file when I was just starting out and it was a great help to me so I'd like to think it'd help some of the other n00bies out there.