Finally they run the exhaust brake in auto! Like have said multiple times, the Cummins exhaust brake is more powerful in auto downhill than in full if you are letting the truck do the shifting. If you are shifting yourself, then full mode is the way to go.
Time up the hill did a little better than I expected. This truck needs more gears. Did they have tire chains on the tires? They mentioned it in the video, but I could not see them on any tires. I don't recall them mentioning tire chains on the other runs.
So Ford won the uphill time while Ram won the brake applications and fuel economy. I still think they should do the test at 80F. I bet it would be a completely different outcome.