1999 Ford Explorer with the 5r55e. 219k miles. I don't know the history of it, but I wouldn't be surprised at all if it was still on the original fluid, based on the other (lack of) maintenance it had, and the way the fluid and the inside of the pan looked. It had a broken intermediate band, but you could still limp it along through most of the gears. I'm also not sure how long it was limped along with the broken band. Because of that problem, and several other problems, it wasn't economical to fix and the truck was junked at 219k.
My '13 Sienna has 135k miles now and I'm pretty sure the fluid has never been changed. I just bought it a few months ago at 132k. Previous owner apparently went to the dealer for all maintenance and repairs and I don't see a fluid change in any of its service history. I bought fluid and a filter for it right after I bought it, but haven't had the time to change it yet.