This might seem like odd question, but I can't find any literature to answer it. The climate control in the Model X (and S) is pretty much automatic unless you manually set the blower controls. When it's in automatic mode, does anyone know if the compressor and heater are constantly active to condition the air? For example, if the outside air is 72 F and the interior temp is set to 72 F, does the car circulate exterior air without conditioning or is the air always heated or cooled? Is the only way to vent ambient air to manually turn off A/C. turn on exterior ventilation, and manually turn set the fans to a desired speed?