main-builder.cs

static void Main(string[] args)
{
    var sedan = new ModelSedan();
    var suv = new ModelSuv();

    var factory = new CarFactory();
    var builders = new List<CarBuilder> { suv, sedan };

    foreach (var b in builders)
    {
        var c = factory.Build(b);
        Console.WriteLine($"The Car details" +
            $"\n--------------------------------------" +
            $"\nName: {c.Name}" +
            $"\nIs SUV: {c.IsSUV}" +
            $"\nTop Speed: {c.TopSpeed} mph\n");
    }
}