Valet Mode
The thing I don't like about that is that you will end up doing that in front of the attendants or your passenger. What if you don't want anyone knowing your code? Why can't the system just remember your code and give you quick access to a "lock" button or something?
It's kind of an awkward feeling hiding or locking stuff right in front of a valet attendant because you're basically telling them you don't trust them.



