I think it's a charter service. There's like 40-50 people going though (it's a club trip) so it's either gonna be a big bus or a couple smaller buses.
But yeah, taking a bus through the mountains in winter sent up red flags right away. I was on edge driving from Vail to Copper at night on I-70, those banks outside the guard rails are fucking steep! And I'm guessing we have to get on some roads that are much smaller than 70 on the way there.
The time doesn't concern me at all, I drive 15 hours with my family to Chicago a couple times a year, and 2 or 3 years ago we drove from Chicago to Frisco - 22 hrs through a blizzard in the plains.