Every time I board a BC Ferry. I'm on the Swartz Bay - Tsawassen route several times a year and the car does it automatically
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Also there are a few driveways that slope rather more than normal, that I occasionally use, so the car automatically remembering these places is also very convenient. One example: the driveway into the motel beside the supercharger at the Black Bear Diner in Grant's Pass OR has a huge hump just after the sidewalk. I scraped once, and didn't want to do it again.
I guess the other thing is, the car is set to automatically lower to Very Low at highway speeds (>80km/hr). So I use that all the time.