Function in Class

CarManagerV2/StateManager.cs

@@ -29,9 +29,9 @@ namespace CarManagerV2
         public static void removeCar(Car car)
         {
             cars = SafeManager.readCars("cars.csv");
-            Console.WriteLine(cars);
-            cars.Remove(car);
-            Console.WriteLine(cars);
+            Car existingCar = getCarById(car.Id);
+            if (existingCar == null) return;
+            cars.Remove(existingCar);
             SafeManager.saveCars("cars.csv", cars);
         }
 
@@ -47,12 +47,13 @@ namespace CarManagerV2
             }
         }
 
-        public static void createCar(string make, string model, int year, string color, int mileage, decimal price)
+        public static Car createCar(string make, string model, int year, string color, int mileage, decimal price)
         {
             cars = SafeManager.readCars("cars.csv");
             int newId = cars.Count > 0 ? cars.Max(c => c.Id) + 1 : 1;
             Car newCar = new Car(newId, make, model, year, color, mileage, price);
-            cars.Add(newCar);
+            addCar(newCar);
+            return newCar;
         }
     }
 }