Added bike child and edited vehicle

Bike.py

@@ -0,0 +1,14 @@
+from Vehicle import Vehicle
+
+class Bike(Vehicle):
+    def __init__(self, brand, model, year, gears):
+        super().__init__(brand, model, year)
+
+    def display_info(self):
+        """Override the parent class method for a Car."""
+        return f"Bike: {self._brand} {self._model}, {self.gears} gears ({self._year})"
+
+    def bell(self):
+        """Specific implementation for a car."""
+        return "Ring ring!"
+

Vehicle.py

@@ -17,3 +17,6 @@ def fuel_up(self):
 
     def brake(self):
         print("Braking the car.")
+
+    def park(self):
+        return "The car is at 0 mph now, and parked"