I didn't know what a 'rail speeder' is, but I do now:
https://en.wikipedia.org/wiki/Railroad_speeder
I also found this:
"Sandy appears to be based on a Motorcar (aka Speeder), which were self-propelled vehicles used for track maintenance. She seems to most closely resemble those made by Fairmont Railway Motors of Fairmont, Minnesota."
![[Image: 042716-Barn-Finds-19xx-Fairmont-Speeder-1-630x473.jpg]](https://barnfinds.com/wp-content/uploads/2016/04/042716-Barn-Finds-19xx-Fairmont-Speeder-1-630x473.jpg)
https://en.wikipedia.org/wiki/Railroad_speeder
I also found this:
"Sandy appears to be based on a Motorcar (aka Speeder), which were self-propelled vehicles used for track maintenance. She seems to most closely resemble those made by Fairmont Railway Motors of Fairmont, Minnesota."
![[-]](https://www.blueplastictracks.org/images/collapse.png)