Coldest Temperature Driven in Your Bronco?

So,

With the Arctic Blast moving through the country and impacting millions of people.

I would like to know who has driven the Bronco in super Cold Temps.
I left work yesterday and it was -1°

The doors were a little sticky but window operation was good -- how it lowers and raises with door.

I'm in Central PA.

So, how did your Bronco handle the cold?