First, I have never known this feature before reading this thread. You learn something new everyday. I guess I did it the old fashion way, I look for a gas cap before entering the car. If I forget, I move the car. While I am sure I have done that, I don’t recall needing to do that in the recent past.
Second, has your friend read the entire 400-page car manual that reads like a manual? Any answer other than no is a fucking lie.