Howdy neighbour!
And thanks for the great tip. I didn't realize that the car wouldn't precondition on the way the SC if the final destination was close by. When we go to Peterborough we now charge along the way, stay overnight with our friends (plugged in with 110v) and then hit one of the two chargers on the way home. Before, we'd hit the Peterborough SC before our friends' house but thinking back I can't recall if the car preconditioned.
Starting out on the way home, while in our friends' driveway, the car always thinks it can make it home without charging but along the way, it changes its mind. It has done that both in warm weather and cold. My record on that drive was "arrive home with 12%" changed to "reduce your speed to reach destination" (my speed was only 80 kph) and showed -5% on arrival. The NAV never automatically added the Perth charger, I had to select it as a stop on the way in order to get rid of the panicked 'you aren't gonna make it' messages. I never believed the 12% left in the first place and had always planned to stop at the SC, but letting the car decide if I was on a route I didn't know would have been a mistake and that experience means I no longer trust the NAV's calculations at all.
This is especially true this summer, since there are no superchargers or even L3 chargers on our 3+ hour monthly drive. For drives 1 & 2, it was off by 5% and 10%. I've now started taking pictures of the screen at the beginning, middle and end of the trips as proof because everyone tells me how amazing the system is and my range anxiety is unwarranted, just trust the car.