Good question, I was wondering the same thing ( I just bought a winter car). I heard that you can get flat spots on the tires if you dont move it around in the winter? Is this true if you are only parked for 6 months? If so, how do you prevent it?
Also I have heard that you should put a bar of soap in your car because it will keep mice out ( i dont know how much truth there is to that claim), and someone else told me to tape up my exhaust tips so that nothing can get in there....that part makes sense to me.
ALSO, Is it okay to remove the battery altogether? I have a yellow top and I would like to use it in my winter car? Would it be a problem if my stang had no battery for 6 months? I dont plan on starting it in the winter anyway.