Jumping in here, have been exhausted, with all the festivities.
On them talking in their car, maybe they do not want to be tracked to in their home
Have read where people can track right where picture is taken.
FWIW
Now that you mention it, I read the same article. They drive car away from home so no one can track Its their phone pings that identifies location.
Then they use the phone to record and send the message. Keeps the families safe.
I Teresa g. I never thought of that.