That is good to hear! It is a large volume of air. Did you feel like the roof was radiating heat much? I will say between my wife and I - we have had 3 Teslas in central Ohio and never found the glass roofs to be a problem (I would say we both have a low tolerance for direct sun).
This is Tesla's system (which I believe Rivian has mirrored). You have options. You can use the app to turn it on whenever (so walking back to your car and want to warm or cool it)... or... you can hit "pet mode" or "hold" and the temp will remain a constant setting (so quick run into the bank...
I don’t know these guys much but I will say it felt sort of self indulgent. If you charted talking time it was 80% host (Jason?). His schtick is fine but there was just too much. I found myself eager for him to stop talking so the guys who actually designed the car could speak. I get that fans...