In New Hampshire, USA, once, I parked my car 'for the winter' where it got covered by a couple feet of snow (and fully snow-drifted on all sides). (I had a studded-tire four-wheel-drive for winter driving [and fire wood hauling].) In late winter, needing to go on a road trip on dry roads, I dug it out, only to find icicles growing inside from the ceiling, probably from when the car acted a bit like a greenhouse when the snow was thin. I sure enjoyed driving through town with 2 feet of snow on the roof, given it hadn't snowed much at all during the previous couple of weeks.
Thereafter, even if not driven for months at a time, I never let the car become an igloo again.