During the fight scene between Gayle and Liotta, an unexplained set of nunchucks is thrown from off camera and caught by Gayle. There is no one else near them.
The dialogue between Gayle and Clare makes no sense. "I'll be there in 25 minutes." Reply: "It's urgent!" Response: "I said, I'll be there in 35 minutes!"
This post-apocalyptic world has landlines and cell phone service/signals..
The 'snow machines' of the future are currently called snowmobiles.
Spencer smokes right next to the oxygen.