Help with parenting and following

So i have a game im making, and you can switch your cars in the game, which are creating different cars under a "Spawner" parent, and I have zombies that chase the "Spawner" Using a Transform. The Zombies are indeed following the "Spawner" But the "Spawner" is not following the Vehicle your in. (Take note That the car controllers are in the different vehicles that you switch, because then i can have different speeds.) Overall, i need help for the "Spawner" to follow the Vehicle instatly.