I believe it gets a bit trickier because you can use your right to remain silent? They also can’t physically force you to speak the password but they can restrain you and unlock your phone by force.

How, when you have no energy and time?

No, for moose you are actually supposed to swerve and risk the ditch.

Both of those functions have been available via key fob for at least a decade, no internet required. Though yes the range on that can be limited.