Undefined reference to vtable issue after reading other posts

After reading past posts about undefined references to vtables, I'm still unsure of why I'm getting an error with mine. I thought I used the proper overrides but I have been unable to get this error to go away. I thought my initial issue might be with overriding or the destructor but the changes I attempted did not seem to fix anything. I'm also getting another undefined reference to one of my functions within my original class. Any advice here would be greatly appreciated.

test.cpp

#include <iostream>
#include <vector>
#include <cstdlib>
#include <algorithm>
#include "CarFactory.hpp"
#include <ctime>
#include <numeric>

using namespace std;

// same function with an STL algorithm
CarFactory *getLeastBusyFactory(const vector<CarFactory*> &inFactories) {

   if (inFactories.size() == 0) return nullptr;

   return accumulate(inFactories.begin()+1, inFactories.end(), *inFactories.begin(),
       [](CarFactory *a, CarFactory *b)
         { return a->getNumCarsInProduction() < b->getNumCarsInProduction() ? a: b; }
       );               
}


int main() {
   vector<CarFactory*> factories;
   
   srand(time(nullptr));

   // Create 3 Ford factories and 
   // 1 Toyota factory with random load. 
   factories.push_back(new FordFactory("Chicago, IL", rand()%4));   
   factories.push_back(new FordFactory("Dearborn, MI", rand()%4));
   factories.push_back(new FordFactory("Louisville, KY", rand()%4));
   factories.push_back(new ToyotaFactory("Lafayette,IN", rand()%4));

   for (size_t i=0; i < 10; ++i) {
      CarFactory *currentFactory = getLeastBusyFactory(factories);
      Car *newCar = currentFactory->requestCar();
      cout << "Ordering " << newCar->getMake()  << " " << newCar->getModel()
       << " from " << currentFactory->getLocation() 
       << endl;
   }
}

CarFactory.hpp //This is called from the test.cpp

#include <string>

// abstract product
class Car{
 public:
   std::string getMake() const {return make_;}
   std::string getModel() const {return model_;}
 protected:
   std::string make_; // this car's make
   std::string model_; // this car's model
};

// two concrete products
class Ford : public Car{
 public:
   Ford();
};

class Toyota : public Car{
 public:
   Toyota();
};

// absract factory
class CarFactory {
public:
   CarFactory(std::string location, int numCarsInProduction):
      location_(location), 
      numCarsInProduction_(numCarsInProduction){}

   Car* requestCar();
   int getNumCarsInProduction() const {return numCarsInProduction_;}
   std::string getLocation() const {return location_;}
   virtual ~CarFactory(){}
protected:
   virtual Car* makeCar() =0;

private:
   int numCarsInProduction_;
   std::string location_;
};

// two concrete factories
class FordFactory : public CarFactory {
public:
   FordFactory(std::string location="", int numCarsInProduction=0):
       CarFactory(location, numCarsInProduction) {}
protected:
   Car* makeCar() override;
};

class ToyotaFactory : public CarFactory {
public:
   ToyotaFactory (std::string location="", 
          int numCarsInProduction=0):
       CarFactory(location, numCarsInProduction){}
protected:
   Car* makeCar() override;
};

Here are the errors I am getting:

C:/TDM-GCC-64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\Jaden\AppData\Local\Temp\ccWdlJfk.o:CarTest.cpp:(.text+0x370): undefined reference to `CarFactory::requestCar()'
C:/TDM-GCC-64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\Jaden\AppData\Local\Temp\ccWdlJfk.o:CarTest.cpp:(.rdata$.refptr._ZTV13ToyotaFactory[.refptr._ZTV13ToyotaFactory]+0x0): 
undefined reference to `vtable for ToyotaFactory'
C:/TDM-GCC-64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\Jaden\AppData\Local\Temp\ccWdlJfk.o:CarTest.cpp:(.rdata$.refptr._ZTV11FordFactory[.refptr._ZTV11FordFactory]+0x0): undefined reference to `vtable for FordFactory'
collect2.exe: error: ld returned 1 exit status