How long can a car stay in garage if temps drop below freezing

I think you should sell the car to me. I will park it my garage where it will never get to freezing.

it normally sits on a hardwood floor dealer showroom all winter, perfect 68 degree conditions.Because i painted under the hood and had taken the old motor out last fall, i put it in the bay. Too hard to get it inside not running.
Put new motor in last weekend, waited( i thought) till cold nights were over... i goofed by a few days....