Certainly not unknown here for School Buses to be frozen, and I have heard of Construction Equipment needing to be plugged in.
That guy in the video had an interesting conclusion at the end. He certainly does not like EA and how could they role out new equipment without testing them? He mentioned Tesla work in cold weather and some others which are reliable, after all I think the Country with the biggest percentage take up is Norway and it gets cold there. He was checking the Front Range area and yes it was cold but not once in a lifetime cold, I have seen it colder, much colder.