Panama Canal locomotives or "mules".
<video controls autoplay loop>
<source src="https://s3-us-west-1.amazonaws.com/hmt-forum/panama_canal_electric_locomotives.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>
Previously:
https://www.homemadetools.net/forum/...668#post143534
https://www.homemadetools.net/forum/...984#post156957
https://www.homemadetools.net/forum/...855#post140402
https://www.homemadetools.net/forum/...3281#post77777
