Yeah I’ve had the fog randomness as you describe happen as well. What confuses me is that it will appear suddenly and also disappears quickly when you enable defrost. It’s like the system has a cycle mode that suddenly stops removing cool air from the vehicle (it’s a heat pump, right, so it’s not adding desired temperature so much as removing undesired temperature?). I’ve also noticed if you preheat the car from the app, well that works fantastic! It heats way quicker than the Mercedes did, and also the fans run much harder. But then once you get in and drive for a bit and the car has decided it’s reached the set temperature, then the weird auto mode kicks in where the fan drops very low and the footwells get cold. It’s a finicky system. I still love the crap out of the car but I think the HVAC has some room for needed tweaks via OTA as you say. I love the drive on route 9 in Vermont by the way. I went to Bennington for undergrad so I know those roads well.