I don't work up there professionally any more as I live in Sacramento, but the YMSP is my second home and where I grew up. I still make the trek every couple of weeks when I can. As for the 4 "jenny" railcars as they are called, they are original WS equipment that were used out in the woods for maintenance and medical service. They looked a lot different on the WS but the mechanics are original. Today 3 have been lengthened to accommodate passengers, and one (the short one) is all original except for the roof and bench seat.