Ask

Just coming in later, would you please ask your laughing wife how she knows when she'll need to pull out of the way when an ambulance is approaching, and has she ever had one sneak up on her/catch her off guard?

I bet she notices the lights and also other cars moving over, right?

Because I've seen an ambulance get fucking stuck behind an asshole who was driving with headphones on. Lights and siren, but he was too fucking distracted to even notice. The cars on the other side of the double yellow squeezed over enough for the ambulance to get around, because they were paying attention. Like your wife does, I assume.

Because what's in her ears is quietude, and that's not as distracting as whatever the headphones are playing.