Let me try help you out, and lay out the "legal stand point"with which you claim to so familiar.In a legal stand point it is. Stop trying to be mister play on words. Your level of troll isn't good enough. Good try though.
NO statute in the United States says a vehicle is an extension of your home.
NO court decision at either the state or federal level says that your vehicle is an extension of your home.
NO legal journal or published article says that your vehicle is an extension of your home.
NO attorney in any proceeding has ever said that your vehicle is an extension of your home.
So from a "legal point" the concept does not exist.
Feel free to provide any citations to which you are privy that make it a "legal point"
The so called "legal maxim" that "your vehicle is an extension of your home" is purely a creation of keyboard cowboys, who keep repeating among themselves as though it is revealed truth.