A group of us decided to model some more modern 1:20 passenger cars based upon the ET&WNC Azalea.
This was a more modern passenger car with arched windows and vestibules.
I plated over the clerestory windows and added Garland ventilators.
I originally started with a 1:22.5 scale coach, observation, and combine.
They are way too small for pulling behind a 1:20 locomotive, and really don't look that realistic behind a 1:22.5 locomotive.
They are just too tiny.