Myself as a Fairmont A5 Motorcar owner and NARCOA member, I follow this subject fairly closely. My Fairmont presently has a 4-cylinder Waukesha engine in it however if it ever even appears to hiccup, there will be a Model-A installed, you can bet.
The picture of the Sedan above is not really a Motorcar by intention but appears to be intended for use as a Tug. Mounting the Sedan in this method allowed for the extra weight to aide in traction when pushing/pulling loaded cars, and the extra height allowed the Engineer to see over the loaded cars.
I have attached a few pics from my collection to show the diversity of how Ford's moved people & freight on the R/Rs. If you really like this type of thing, here is a post I made awhile back where a (well-worn) Victoria was used on a East Texas railroad. This is a video of the one Tom posted about above this.
https://www.fordbarn.com/forum/showthread.php?t=252641
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