Be very careful about it and get it secured behind the garage doors and if your garage door is at fault get it repaired as soon as possible so that you get your peace back that your car is resting behind trustworthy and strong doors. Make sure that your garage door is tightly packed and do not allow humidity inside and by saying tightly packed I mean that it should be as air tight as possible because this way your car will not get in touch with the humid and moist air at the night which rusts the car badly and starts melting its steel into the air and afterwards you don't have any control over it.