This is pretty cool actually. As a model railroader and Saturn enthusiast, I'd love to get my hands on one of these, but I probably wouldn't run it because I'd want to keep it pristine.

Apparently there was a whole set, with matching locomotive and cars. It's listed on Amazon with some more pics, but sadly there's none for sale. https://www.amazon.com/Athearn-Saturn-Automobile-Scale-Employees/dp/B00A7YOYZ6