La Plata Rail Days 2024 - very fast, very long "S"tack train with three mid-DPUs and 257 well-cars!

Taken later on Sunday June 30th, with many of the Rail Days attendees already headed home, here's a long westbound maritime container "stack" train with an NS "pony" up front and three mid-DPUs.
Stackers like this have no special movement priority (unlike Z and Q intermodals), but this one was moving pretty fast! Maybe not max track speed of 70 mph, but pretty close....
I counted 3 lead motors, 131 wells, 3 DPUs, and 126 more wells, making this one around 13,000 feet or about 2.5 miles long. (!)
La Plata Rail Days is an unofficial annual gathering of railfans and train aficionados bound together by a love of trains and our shared community on the live-chat on UA-cam for Virtual Railfan's popular cameras at La Plata, which sees 60+ trains pass each day.
[Camera: LG V40 ThinQ]