adjust solution

Author: SteffenLm

Exercise.java

@@ -7,6 +7,10 @@ public static void main(String[] args) {
     Vehicle vehicle2 = new Vehicle("MAN", "TGX", Engine.DIESEL);
     Vehicle vehicle3 = new Vehicle("Opel", "Zafira Life", Engine.DIESEL);
 
+    System.out.println(vehicle1.toString());
+    System.out.println(vehicle2.toString());
+    System.out.println(vehicle3.toString());
+
     System.out.println("Anzahl Fahrzeuge: " + Vehicle.getNumberOfVehicles());
   }
 }

Vehicle.java

@@ -40,7 +40,7 @@ public void brake(int valueInKmh) {
   }
 
   public String toString() {
-    return make + " " + model;
+    return getMake() + " " + getModel() + " (" + getEngine().getDescription() + ")";
   }
 
   public static int getNumberOfVehicles() {