def main():
car = Vehicle('Kirloskar', 6, 'No', '4S', 1)
ritz = disel('DI Mahindra', 4, 'No', '1000cc', 'present', 5)
sls = bmw('SLS Mc learn', 4, 'YES', 'Dx', '3D camera', 2)
ballano = petrol('New ballano', 4, 4, 'V8', 'present', 4)
car.Showinfo()
ritz.Showinfo()
sls.Showinfo()
ballano.Showinfo()
