edited Truck.py and added Bike.py

Bike.py

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

Truck.py

@@ -1,14 +1,18 @@
 from Vehicle import Vehicle
 
 class Truck(Vehicle):
-    def __init__(self, brand, model, year, max_load):
-        super().__init__(brand, model, year)
-        self.max_load = max_load
+	def __init__(self, brand, model, year, max_load):
+		super().__init__(brand, model, year)
+		self.max_load = max_load
 
-    def display_info(self):
-        """Override the parent class method for a Truck."""
-        return f"Truck: {self._brand} {self._model}, Max load: {self.max_load} tons ({self._year})"
+	def display_info(self):
+		"""Override the parent class method for a Truck."""
+		return f"Truck: {self._brand} {self._model}, Max load: {self.max_load} tons ({self._year})"
 
-    def honk(self):
-        """Specific implementation for a truck."""
-        return "HOOOOONK!"
+    	def honk(self):
+		"""Specific implementation for a truck."""
+		return "HOOOOONK!"
+
+	def is_old(self):
+		"""Specific method to check truck age"""
+		return year < 1960