What if he took your car and didn't come back?
No if I trusted my husband and he was my best friend and left me a note that didn't mention that he'd run off with a teen and he didn't mention suicide, basically saying hun I need time off, no I would not report him missing for just taking one of our cars.
If I'm correct she reported him missing early afternoon he'd been gone all of a few hours.
We don't have his/her cars we have our cars even though we each have a specific one we drive the most.
ETA - Something in the note caused her to report him missing.