Some people require engine block heaters to start their cars in cold weather. I have the luxury of a garage so I don’t.
My problem is far more serious: my subwoofers don’t kick when they’ve been sitting all night at ~zero Fahrenheit.
My solution last weekend: run a ceramic space heater in my trunk for 15 minutes!
Here’s some evidence of the weather this winter in The Constitution State: 27″ of snow in ~8hrs!