diff --git a/AutoFacSamles/Program.cs b/AutoFacSamles/Program.cs
index 41c7ba8..8794f76 100644
--- a/AutoFacSamles/Program.cs
+++ b/AutoFacSamles/Program.cs
@@ -46,7 +46,13 @@ namespace AutoFacSamles
         private Engine engine;
         private ILog log;
 
-        public Car(Engine engine,ILog log)
+        public Car(Engine engine)
+        {
+            this.engine = engine;
+            this.log = new EmailLog();
+        }
+
+        public Car(Engine engine, ILog log)
         {
             this.engine = engine;
             this.log = log;
@@ -64,9 +70,10 @@ namespace AutoFacSamles
         static void Main(string[] args)
         {
             var builder = new ContainerBuilder();
-            builder.RegisterType<EmailLog>().As<ILog>();
+            builder.RegisterType<ConsoleLog>().As<ILog>();
             builder.RegisterType<Engine>();
-            builder.RegisterType<Car>();
+            builder.RegisterType<Car>()
+                .UsingConstructor(typeof(Engine));
 
             IContainer container = builder.Build();