Наследование классов

class Vehicle:
    x = 0
    y = 0
    maxspeed = 0
    weight = 0
 
    def __init__(self, x, y, maxspeed, weight):
        self.x = x
        self.y = y
        self.maxspeed = maxspeed
        self.weight = weight
 
    def movement(self):
        print("Движение автомобиля в точку ", str(self.x), ":", str(self.y), sep="")
 
 
class Model:
    vclass = ""
    manufacturer = ""
    model = ""
 
    def __init__(self, x, y, maxspeed, weight, vclass, manufacturer, model):
        Vehicle.__init__(self, x, y, maxspeed, weight)
        self.vclass = vclass
        self.manufacturer = manufacturer
        self.model = model
 
    def movement(self):
        print("Движение ", str(self.manufacturer), " ", str(self.model) , " в точку ", str(self.x), ":", str(self.y), sep="")
 
 
car = Vehicle(100, 300, 150, 1500)
car.movement()
 
viano = Model(200, 400, 180, 2500, "Business", "Mercedes", "Viano")
viano.movement()

x = 0
y = 0
maxspeed = 0
weight = 0
vclass = ""
manufacturer = ""
model = ""

class Model:
...
    def __init__(self, x, y, maxspeed, weight, vclass, manufacturer, model):
        Vehicle.__init__(self, x, y, maxspeed, weight)  # Разве как раз тут я не наследую эти свойства из первого класса?

class Vehicle:
 
    def __init__(self, x, y, maxspeed, weight):
        self.x = x
        self.y = y
        self.maxspeed = maxspeed
        self.weight = weight
 
    def movement(self, x, y):
        self.x = x
        self.y = y
        print(f'Движение автомобиля в точку {self.x} : {self.y}')
        
class Model(Vehicle):
    
    def __init__(self, x, y, maxspeed, weight, manufacturer, model):
        Vehicle.__init__(self, x, y, maxspeed, weight)
        self.manufacturer = manufacturer
        self.model = model
 
    def movement(self, x, y):
        self.x = x
        self.y = y
        print(f'Движение автомобиля {self.manufacturer} в точку {self.x} : {self.y}')
 
 
car = Vehicle(100, 300, 150, 1500)
car.movement(15, 25)
 
viano = Model(200, 400, 180, 2500, "Mercedes", "Viano")
viano.movement(180, 2500)

class Test:
    coun = 0
    def __init__(self):
        __class__.coun += 1
        
for _ in range(10):
    a = Test()
print(Test.coun)

class Vehicle:
self.x = 0
self.y = 0
self.maxspeed = 0
self.weight = 0
 
    def __init__(self, x, y, maxspeed, weight):
        self.x = x
        self.y = y
        self.maxspeed = maxspeed
        self.weight = weight