The North Pacific Coast transported folks wanting to get away from San Francisco for the weekend North to a number of locations along the Russian River in open Picnic Cars. The following photo shows a Picnic Car in the Sausalito docks area in the 1890s.
The picnic car is the last car in the rightmost consist in the above photo.
A picnic train is caught leaving Cazadero in the above photo.
One of the restoration societies has taken one of its 1:1 Carter flats and is converting it into a picnic car. The following photos show the car mid-construction.
I think I’ll do the same thing in adding some picnic car interest to my layout.