Trains in Switzerland Are Now Running Over Solar Panels in a First-of-Its-Kind Test
Using train tracks for solar collection is a novel idea, with some merit. 

I mean, many tracks are in direct sunlight and they remain clear most of the time. 

https://www.zmescience.com/science/news-science/solar-panels-over-train-tracks-switzerland/
https://bitchindave.blogspot.com/2026/06/trains-in-switzerland-are-now-running.html