Thank you. I am cognizant of the recirculate function that causes interior window fogging. I have not activated the recirculate setting and maintained the circulation mode since delivery but I still get intermittent interior fogging. Yesterday in 40-degree temperatures driving through the mountains in VT (Rt 8 and RT9) where visibility at night intermittently went from a couple of hundred yards to ten feet for 40 miles the windows fogged up despite selecting the three fan buttons on the HVAC panel and Sync. (The upper button is the windshield defrost button.) I had to keep separately selecting the windshield defrost button to clear the fogged windows, which is unlike any other car that I have had. Aside from that inconvenience, the car was brilliant and very confidence-inspiring on the narrow 50 mph roads in heavy fog. Of course, I also had to keep the rear window/exterior morrow defrosters on in those conditions.
I would appreciate others' perspectives on HVAC settings that I can set that will not change but will maintain a constant cabin temperature front and rear as well as send enough warm air to keep the interior windows clear of fog.