diff --git a/assets/cono.png b/assets/cono.png
index 5f43860..cc3ac72 100644
Binary files a/assets/cono.png and b/assets/cono.png differ
diff --git a/assets/freeway.png b/assets/freeway.png
deleted file mode 100644
index b643390..0000000
Binary files a/assets/freeway.png and /dev/null differ
diff --git a/assets/freeway_1.jpg b/assets/freeway_1.jpg
new file mode 100644
index 0000000..73eae49
Binary files /dev/null and b/assets/freeway_1.jpg differ
diff --git a/assets/gasolina.png b/assets/gasolina.png
index 361c741..a6cdb5c 100644
Binary files a/assets/gasolina.png and b/assets/gasolina.png differ
diff --git a/assets/policecar.png b/assets/policecar.png
index 4659bb4..87db67b 100644
Binary files a/assets/policecar.png and b/assets/policecar.png differ
diff --git a/assets/porsche.png b/assets/porsche.png
new file mode 100644
index 0000000..b9a30a7
Binary files /dev/null and b/assets/porsche.png differ
diff --git a/example.wlk b/example.wlk
index 44421aa..2bf51b6 100644
--- a/example.wlk
+++ b/example.wlk
@@ -1,27 +1,34 @@
 import wollok.game.*
 
-//Cómo hacer para moverse más rápido?
+// Juego de autos con mayor velocidad de movimiento
 
 object juegoDeAutos {
 
   method iniciar() {
-    game.width(10)
-    game.height(9)
-    game.boardGround("freeway.png")
+    game.width(9)
+    game.height(10)
+    game.cellSize(50)
+    game.boardGround("freeway_1.jpg")
     game.addVisualCharacter(auto)
-    game.addVisualCharacter(obstaculo)
+    game.addVisual(obstaculo)
+    game.addVisual(contador)
 
     keyboard.left().onPressDo({ auto.moverIzquierda() })
     keyboard.right().onPressDo({ auto.moverDerecha() })
 
-    game.onTick(1000, "moverse", {obstaculo.moverseHaciaAbajo()})
+    game.onTick(2000, "moverse", {obstaculo.moverseHaciaAbajo()
+      contador.aumentarPuntos()
+      auto.perderNafta()
+      if (auto.nafta <= 0) game.stop()
+    })
   }
 }
 
 object auto {
   var nafta = 100
-  var position = game.at(5, 4)
-  method image() = "policecar.png"
+  var position = game.at(1, 0)
+
+  method image() = "porsche.png"
   
   method perderNafta() {
     nafta -= 2
@@ -30,13 +37,14 @@ object auto {
   method position() = position
 
   method moverIzquierda() {
-    if (position.x() > 0) {
+    if (position.x() > 1) {
       position = game.at(position.x() - 1, position.y())
     }
   }
+  
 
   method moverDerecha() {
-    if (position.x() < game.width() - 1) {
+    if (position.x() < game.width() - 2) {
       position = game.at(position.x() + 1, position.y())
     }
   }
@@ -51,22 +59,54 @@ object auto {
 }
 
 object obstaculo {
-  var position = game.at(1.randomUpTo(game.width()), 4)
-  method image() = "cono.png"
-  /*method aparecer() {
-    posicion = game.at(0.randomUpTo(9),0)
-  }*/
+  // Posición inicial aleatoria en la fila superior del tablero
+  var position = game.at(0.randomUpTo(game.width() - 1), 9)
+  method image() = "policecar.png"
+  
   method position() = position
+  method position(newPosition) {
+    position = newPosition
+  }
 
   method moverseHaciaAbajo () {
-     if (position.y() < game.height() - 1) {
-      position = game.at(position.x(), position.y() + 1)
-    } else {
+    if (position.y() > 0) {
+      position = game.at(position.x(), position.y() - 1)
+    }  else {
       // Si el obstáculo llega al final del tablero, reaparece en la parte superior con nueva posición
+      position = game.at(0.randomUpTo(game.width() - 1), 9)
+    }
+  }
+}
+
+class AutoEnemigo {
+  var position
+  method image() = "policecar.png"
+  
+  method position() = position
+  method position(newPosition) {
+    position = newPosition
+  }
+
+  method moverseHaciaAbajo() {
+    if (position.y() < game.height() - 1) {
+      position = game.at(position.x(), position.y() - 1)
+    } else {
       position = game.at(0.randomUpTo(game.width() - 1), 0)
     }
   }
 }
-//TODO : Implementar la clase obstaculo
-//Cómo hacer para moverse más rápido?
-//Movimientos con polimorfismo
+
+object contador {
+  var puntos = 0
+  const property celeste = "279df5cc"
+
+  method position () = game.at(5, 9)
+
+  method aumentarPuntos() {
+    puntos += 10
+  }
+
+  method text() = "Puntos: " + puntos
+  method textColor() = celeste
+  
+}