It’s cold. You hate scraping the ice off your windshield. It’s really, really cold. You run out and start the car, turn on the heat, and go back into your house to finish getting ready. After all, it is really, really cold out there!
Steamers
You see driverless cars throughout your neighborhood, idling in the driveway, a trail of vapor rising from the tailpipe as the engine warms. Car thieves see them too. They call them steamers and they are easy cars to steal.