Vehicle lockout risks with a running engine
https://city-wiki.win/index.php/Vehicle_lockout_risks_with_a_running_engine
Leaving your vehicle running while stepping out, even for a quick errand, creates a serious lockout risk. If the doors auto-lock or you accidentally close the driver's side, you're stranded with the engine running, wasting fuel and potentially overheating. This is especially dangerous in winter when exhaust can build up under snow, or in enclosed spaces where carbon monoxide poisoning becomes a real threat.