Vintage metal Athearn/Varney and wood Ambroid/Silver Streak freight cars.
I've rearranged the 60's/70's lighter plastic cars (Athearn, TM, etc) from the heavier vintage freight cars so it will be easier to assign appropriate motive power to that respective string of cars.
I came up with some 'stats' that I wasn't aware of:
There are around 210 vintage freight cars as I thought I only had about 150. The bulk of the vintage cars have either/both Acurail plastic trucks and Intermountain metal wheel sets. I tried to keep the original metal, sprung trucks but the Intermountain wheels, sometimes, shorts out when the insulated side touches the metal truck frame.
There are only about 100 plastic freight cars at Seattle's freight yard. The bulk of the plastic cars have Intermountain metal wheel sets.
Seattle's freight yard:
Each track holds from 36 to 43 freight cars.
The 'icing' platform (far left) has all plastic 'reefers' on both sides of the platform.
Besides the 2 'reefer' tracks, there is only one track with the plastic freight cars. The rest are all 'vintage'.
The St. Paul freight yard only has 1 track (far left) with vintage freight cars. The rest are all plastic.
About a year ago, I removed about 100 plastic freight cars from the layout.
The passenger yard was installed about 1.5 years ago. They have vintage and modern passenger cars. Vintage being the old AHM plastic cars from the 70's. The vintage cars needed new wheel sets. The newer BLI, MTH, Walthers, etc, already have nice 'free wheeling' wheels plus their detail is excellent.