The mechanical key hidden inside your key fob can be used to unlock the cover of the interior AC outlet. Once unlocked you can slide the cover to the side and the receptacle is then accessible. I have verified that. I haven’t actually tried turning it on or plugging anything into it yet. I guess I should just to verify operation.
It seems to me that the external adapter would be more useful for running an extension cord into your house to run some critical loads if you have a grid outage. If you were to use the receptacle inside the car you would have to leave a window cracked open and since many grid outages are associated with storms that might result in your car’s interior getting wet. So I plan on getting the external adaptor someday but at the current $500 for what looks to be simply some cheap plastic and a few wires I really can’t bring myself to buy one at present. My guess is that if they are as simple as they appear there will be a much cheaper aftermarket version shortly.
It seems to me that the external adapter would be more useful for running an extension cord into your house to run some critical loads if you have a grid outage. If you were to use the receptacle inside the car you would have to leave a window cracked open and since many grid outages are associated with storms that might result in your car’s interior getting wet. So I plan on getting the external adaptor someday but at the current $500 for what looks to be simply some cheap plastic and a few wires I really can’t bring myself to buy one at present. My guess is that if they are as simple as they appear there will be a much cheaper aftermarket version shortly.