That Cold Morning Ritual of Letting Your Car Warm Up? It's Based on Technology That Doesn't Exist Anymore
On a freezing January morning, most Americans follow the same routine: start the car, go back inside, let it idle for five or ten minutes before driving. It feels responsible. It feels like good ownership. The problem is, it's a habit built around engine technology that the auto industry quietly retired about 40 years ago — and nobody really sent out the memo.