Dreaded assumed disaster did not occur.
Have a hire car for a week or two. Popped down to the public swimming pool 3km away. Stowed my possessions and entered the pool, walked through the water to the other end where I do my exercises and sensed something wasn’t right.
Felt in the bathers pocket and there is the fob for the rental car that had become detached from my other keys.
Quickly jumped out of the pool and dried fob on my towel. After the session an hour later walked to the car fully expecting having to call RACQ and fork out an arm and a leg for a new fob.
But no! Car opened and I drove home. Been out and about all day yesterday and today and continuing to work fine.
Phew - LTIK.