I was encouraged to check out putting our car in a bag:
http://www.vehiclebags.com/faq.html
We are also Mi. with a detached garage and don't want to spend the insurance money all winter. We will go out start it up and the flat tire thing is real here, had it happen to another car out in the garage one time.
Has anyone seen/used these car bags? Any advice about them? Our bigest problem beyond the usual is our garage has had MICE and they ate the wiring on another car, got in and pooped around-little ***** I'd rather rent a space than risk having mice in the XF thanks ann