Remember...
Dead people dont tell stories.
If somebody is in your house that's a different story, but yes you have to feel your life is threatened in order to use deadly force in MI...
My state does not allow outright defense due to property, IE you can't say "I shot him because he was stealing my purse"
You CAN, however, say "Anyone bold enough to enter my private vehicle is enough to cause me to fear for my life". If it's a woman she would likely not be charged. I doubt that any jury in my state would convict. It would depend a lot on the circumstances.
I know for me, personally, to go into my vehicle you would have to 'get through me' IE cause me to fear for my life.