Continuity mistake: In the scene where they're sitting and eating breakfast (he made the huge breakfast) he's reading a newspaper. He puts the newspaper down, in the next shot it's back in his hand, the shot after it's back on the table.
Continuity mistake: In the very beginning, the truck that hits the vehicle does so from straight behind. However, when they pan out, someone the truck is perpendicular to the crashed car. The snow tracks don't show the car that was hit swerving, and there aren't any tracks to show that the truck reversed either.