(No, no, this is about my _car_...)
So I'm heading in to the train station this morning in the Bonneville (which is _not_ my preferred train-station commuter car but I can't get anyone to buy the blasted '93 Escort on which I'd let the plates expire because I didn't think I'd be stuck with it that long since it really is a decent little car that someone should buy so I can get another car to go to the train station with so I don't have to drive the Bonneville which is where I think I came into this comment so let'* continue now), and I had the cruise control set to 50 mph, and the road led into a slight uphill curve where the traffic speed usually drops by 5 mph. (No, the limit was not 50 mph to begin with.) (No, I'm not going to tell you what the limit is; never mind that part.
So anyway, I dialed down the cruise by 5mph -- tapping the button on the end precisely five times will do that for you; I love that feature. This brought me down to 45 mph as we went into the uphill curve. This is also 2 mph below where overdrive/TCC lockup engages when you're accelerating, and if I'd touched the brake or even gone just a bit slower, it would have let go as usual, but I thought I'd ride it out at 45 mph uphill on cruise control, and see what would happen.
Under this scenario, my Trans Sport would have kicked down and gone to 3000 long ago, but this car wasn't going to let go of lockup: instead it hung on, and as the load went up I watched it swing over into mild SC boost, the RPMs dropped to something like... I dunno, maybe 1300 or something ludicrously low, the car grunted with the effort, but it hung in there, held its speed, and we pulled up and over the hill without ever once downshifting. Good puppy!