Not sure if it will be the only event tied to this DLC, but anyone that does a 500 mile or longer external contract before Feb. 7th will receive a livery resembling the one from 18 Wheels of Steel.
I would like to add from my post from last night that I did see a "Denver to Grand Junction" video that SCS posted on their YouTube page. From Denver to just outside Grand Junction it looks AMAZING and very accurate. But once they got to Grand Junction (my home town) I was severely disappointed. It's not accurate at all.