Updated Car and added child class

Car.py

@@ -12,3 +12,7 @@ def display_info(self):
     def honk(self):
         """Specific implementation for a car."""
         return "Honk honk!"
+
+    def refuel(self, amount):
+        """Refueling the car."""
+        return f"Refueling {amount} liters of {self.fuel_type}."

Van.py

@@ -0,0 +1,17 @@
+from Vehicle import Vehicle
+
+class Van(Car):
+    def __init__(self, brand, model, year, doors, cargo_space):
+        super().__init__(brand, model, year, doors)
+        self.cargo_space = cargo_space  # in cubic feet
+
+    def display_info(self):
+        """Override the Car class method for a Van."""
+        return (
+            f"Van: {self._brand} {self._model}, {self.doors} doors "
+            f"({self._year}), Cargo Space: {self.cargo_space} cubic feet"
+        )
+
+    def load_cargo(self, weight):
+        """Loading cargo into the van."""
+        return f"Loading {weight} lbs of cargo into the {self._brand} {self._model}."