In Scandinavia, very many (probably a clear majority) of cars are equipped with 230 V heaters. There's a connector in the front of the car, you plug the car into an electric socket which has a timer. It goes on in the morning an hour before you plan to leave, and heats up the engine block (heating resistor in the coolant) and optionally there's a Schuko socket in the front passenger's feet and you can plug a heater with a fan there, so that the inside of the car is warm and dry. Both the engine and the cabin heaters range from 600 to 1200 watts.

Most cars can have one installed at the dealership too