Before you may legally drive (own) a car you must be trained not only in how to properly use it but in the rules of the road. Requiring some essential training does not prevent one from driving (owning) a car -- or carrying a gun. It just makes our crowded world safer.
You do not need a DL to buy a car.
You do not need a DL to own a car.
You do not need a DL to have a car on your property/in your house
You do not need a DL to operate a car on private property.
Never mind that gun ownership is a right and driving on public roads is a privilege.
MOTOR VEHICLE VIOLATIONS ON PRIVATE PROPERTY

You cited 2 examples from one state with regard to the operation of a car on private property.
Does not change the fact that:
You do not need a DL to buy a car.
You do not need a DL to own a car.
You do not need a DL to have a car on your property/in your house
You do not need a DL to operate a car on private property, except under certain circumstances, in CT.