реализовать фабрику классов к данному коду

#include <iostream>
#include <string>
using namespace std;
 
class Fabric
{
public:
    string name;
    int speed;
    int wheels;
 
};
 
 
int main()
{
    int count;
    Fabric transport;
 
               transport.name = "Autobus";
               transport.speed = 70;
               transport.wheels = 6;
 
    Fabric transport2;
 
               transport2.name = "Auto";
               transport2.speed = 180;
               transport2.wheels = 4;
 
    Fabric transport3;
 
               transport3.name = "Motorcycle";
               transport3.speed = 240;
               transport3.wheels = 2;
 
    cout<<"Select the transport"<<endl;
    cin>>count;
    switch (count)
    {
        case 1://если count = 1;
        {
                cout<<transport.name<<endl;
                cout<<transport.speed<<endl;
                cout<<transport.wheels<<endl;
                break;
 
        }
 
        case 2://если count = 2;
        {
                cout<<transport2.name<<endl;
                cout<<transport2.speed<<endl;
                cout<<transport2.wheels<<endl;
                break;
 
        }
 
        case 3://если count = 3;
        {
                cout<<transport3.name<<endl;
                cout<<transport3.speed<<endl;
                cout<<transport3.wheels<<endl;
                break;
 
        }
        default:
            cout<<"Incorrect value"<<endl;
 
 
    }
 
    return 0;
}

#include <iostream>
#include <string>
#include <cstdlib>
 
class Vehicle {
public:
    virtual std::string getTypeName() const = 0;
    virtual double getMaxSpeed() const = 0;
    virtual int getWheelsCount() const = 0;
};
 
class Factory {
private:
    class Bus : public Vehicle {
    public:
        std::string getTypeName() const {
            return "Bus";
        }
        double getMaxSpeed() const {
            return 80.0;
        }
        int getWheelsCount() const {
            return 6;
        }
    };
 
    class Truck : public Vehicle {
    public:
        std::string getTypeName() const {
            return "Truck";
        }
        double getMaxSpeed() const {
            return 120.0;
        }
        int getWheelsCount() const {
            return 10;
        }
    };
 
    class Car : public Vehicle {
    public:
        std::string getTypeName() const {
            return "Car";
        }
        double getMaxSpeed() const {
            return 200.0;
        }
        int getWheelsCount() const {
            return 4;
        }
    };
 
public:
    enum VType { VT_BUS, VT_TRUCK, VT_CAR };
 
    Vehicle * getVehicle(VType vtype) const {
        switch (vtype) {
        case VT_BUS:
            return new Bus();
        case VT_TRUCK:
            return new Truck();
        case VT_CAR:
            return new Car();
        default:
            return 0;
        }
    }
};
 
/***************************************************/
 
int main() {
    Factory factory;
    Vehicle * bus = factory.getVehicle(Factory::VT_BUS);
    Vehicle * truck = factory.getVehicle(Factory::VT_TRUCK);
    Vehicle * car = factory.getVehicle(Factory::VT_CAR);
 
    std::cout << "Type name: " << bus->getTypeName() << std::endl;
    std::cout << "Max speed: " << bus->getMaxSpeed() << " km/h" << std::endl;
    std::cout << "Number of wheels: " << bus->getWheelsCount() << std::endl;
 
    std::cout << std::endl;
 
    std::cout << "Type name: " << truck->getTypeName() << std::endl;
    std::cout << "Max speed: " << truck->getMaxSpeed() << " km/h" << std::endl;
    std::cout << "Number of wheels: " << truck->getWheelsCount() << std::endl;
 
    std::cout << std::endl;
 
    std::cout << "Type name: " << car->getTypeName() << std::endl;
    std::cout << "Max speed: " << car->getMaxSpeed() << " km/h" << std::endl;
    std::cout << "Number of wheels: " << car->getWheelsCount() << std::endl;
 
    delete bus;
    delete truck;
    delete car;
 
    system("pause");
    return 0;
}