I knew i forgot something.
I don't recall the actual temp that it got to, but it was about 2/3 full scale, started rising rapidly, while at a constant road speed of 70ish.
It's done it at low speed, high speed, 50ish. But it also went several trips without a problem. I'm fairly confident the thermostat will be involved, what with the cool running temp during the cold winter months.
