Well, the truth is that the weather is so nice here that it's no problem to leave a car or two outside. But we are a car culture too, so there are many folks who have a collectable (read "project") car in one side of the garage and mom's daily driver sits out.
In any event there seem to be more garages filled with junk than cars around here. My garage is a home theatre, but we're adding a bathroom so my folks can move into it.
And don't give me any flack about sticking Mom and Dad in the 'garage,' it's the nicest room in the house at present and we're adding a bigger bathroom and closet than I have...