I left my MBP in sleep mode in my truck for about 4 hours in 30~ degree weather and when I brought it in it was freezing. I opened it up pretty quickly after bringing it in. Will this hurt anything?
x2 you do NOT want to "open it up pretty quickly". In fact, you should do exactly the opposite. Let it sit indoors for 2 hours or more so it gradually warms to ambient temperature. Then you can open it and use as normal.
I left my MBP in sleep mode in my truck for about 4 hours in 30~ degree weather and when I brought it in it was freezing. I opened it up pretty quickly after bringing it in. Will this hurt anything?
I do this all the time. (I'm in Jersey and the days and nights especially have been cold) I've left it in for hours and turn it on right away. I haven't noticed any issues.