C++ pointer function and new keyword

Good Day,

I usually find it best to look at other people's code when I try to learn a programming language.

I am now trying to learn C++ but having some trouble understanding the following function (as an example):

Vehicle* MyClass::GetVehicleByID(uint id)
{
    Vehicle* car = new Vehicle;
    car->model = vehiclesArray[id].model;
    return car;
}

int main()
{
    Vehicle* car = myClass.GetVehicleID(0);
    std::cout << "Car Model: " << car->model << std::endl;
}

I think I understand the concept of pointers. But I don't understand when this object will be destroyed. Will I have to manually delete the object "car" in the main function? Also, why are we using the new keyword instead of just using "Vehicle car();"? As I understand it the new keyword will allocate memory before populating it with the object?

Am I completely out of my depth just by asking these questions? Where or how can I learn to understand what is going on in this code? Because it seems like all tutorials only explain the "basics" like what a pointer is and the most basic way of using them.

Any help would be much appreciated.