CarConfiguration carConfiguration = new CarConfiguration()
{
    CarName = "Ferrari",
    CarModel = "LaFerrari",
    Spolier = true,
    BuildDate = new DateTime(2018, 01, 01)
};

//Thats not work because the "conf" parameter is never assign in the Car constructor
Car myOwnCar = new Car(conf =>
{
    conf = carConfiguration;
});
Console.WriteLine(myOwnCar.CarConfigurationText());

//That works, but is not my purpose do it like this !
Car myOtherCar = new Car(carConfiguration);
Console.WriteLine(myOtherCar.CarConfigurationText());

public class CarConfiguration
{
    public bool Spolier { get; set; } = false;
    public string CarName { get; set; } = String.Empty;
    public string CarModel { get; set; } = String.Empty;
    public DateTime BuildDate { get; set; } = default(DateTime);
}

public class Car
{
    private CarConfiguration carConfiguration = null;

    //Thats not work because carConfiguration is not assigned in the Action as a reference
    public Car(Action<CarConfiguration> configureCar)
    {
        configureCar(carConfiguration);
    }

    //Thats works!
    public Car(CarConfiguration configureCar)
    {
        carConfiguration = configureCar;
    }

    public string CarConfigurationText()
    {
        StringBuilder strBuilder = new StringBuilder();

        if (carConfiguration != null)
        {
            strBuilder.AppendLine(carConfiguration.CarModel);
            strBuilder.AppendLine(carConfiguration.CarName);
            strBuilder.AppendLine(carConfiguration.Spolier.ToString());
            strBuilder.AppendLine(carConfiguration.BuildDate.ToString("mm-DD-yyyy"));
        }
        else
        {
            strBuilder.AppendLine("Car is not configure!");
        }

        return strBuilder.ToString();
    }
}