![Large and small boxcars coupled together](https://www.trains.com/wp-content/uploads/2021/05/20210526-1024x682.jpg)
Freight car evolution
Auto parts trains were a mixed bag in the mid-1960s. This Wabash train in May 1964 shows an old 50-foot parts car with only the code and car numbers visible, new 60- and 85-foot cars, and an open auto rack. J. David Ingles collection