I recently learned that I can load an app on the AWU that will let me unlock my truck (pending having signal reception).
You don't need a cell signal. It uses a local connection (I believe NFC).
Time will tell, but I *think* my use of this case underwater won't require me to pay for the Oceanic+ subscription, either
It doesn't require a subscription. In fact, the DC still works in gauge mode w/o subscription- sort of a viewfinder HUD for depth readings. Also- one subscription covers both Apple Watch Ultra & housing for full DC.