The only key that requires a faraday pouch that’s left in the center console.@netpark You say "the key", there are 3 different keys for this car: valet card, fob, app/BT phone... they are all keys.
I believe that the standard trick for locked wheels is to just soap them up and winch the car onto the flatbed (ugh).
Yes, the battery usage inside or outside of a bag should be about the same.
The fob's battery is pretty trivial to remove and to reinstall, only slightly more effort than open/close a bag... and given the fob's ability to burn through batteries, not unlikely that you'd need to change the battery in a fob after a couple of months in a bag (or in a drawer in the house)... but remember, with a dead/removed battery the fob still works in the same basic way as the valet card.
That’s very interesting of the soaping of the tires. I didn’t know that.