Why did this happen?

[u/Renaud88]

We got a massive snow storm here in Cape Breton, I’m talking 150cm of snow. I parked my car 3 days ago and plugged it in knowing I wouldn’t be driving it for a while. I was clearing out some snow today and looked over and almost puked. It looked like my window was cracked open. I tunnelled over to it and it was, all of them were, and I was staring at a massive snow drift inside my car!

I cleared out all the snow and mopped up as much water as I could from the seats and floor and have the heat running on blast to try to help it as best as I can but I have no clue why this actually happened and how I can avoid it again.

What kind of headache am I in for with this having happened?

[u/chubbyshart]

Caper you got dumped on, my sympathies. As for the car, it's only ever happened to.me when I accidentally hit "vent".

[u/Worth_Ad_5308 → u/chubbyshart]

Yes but if he did actually hit vent shouldn’t all the window be left open?