The coroner trucks license plate is blue with gold text. That plate style was phased out in the 80s and 90s and would've been on normal cars and trucks. Emergency vehicles use municipal white plates with blue text.
After the girl returns from the telephone pole she opens the right door of the car. Before she gets in the car the newspaper still hangs on the inside of the door window, but in next shot from inside it is gone.
While in the car the radio announcer says, "The National Weather Service in Harrisburg has issued a Winter Storm Warning for the entire Eastern Seaboard..." There is no National Weather Service bureau located in Harrisburg, Pennsylvania and even if there was they wouldn't issue a storm warning covering the entire Eastern Seaboard.
After their car crashes, the guy suggests that the girl operate the car's controls while he tries to push it out of a deep snowbank. However, much of the car is so covered in snow and drifts that it would have been impossible to push it out.
When they begin their trip there is no license plate on the rear of the car. Even though the girl loads her suitcase into the trunk and closes the trunk lid, she doesn't notice a thing where the plate should be right in her face.