Factual error: The night the episode takes place is described to have freezing rain with very icy road conditions. Vic describes the roads to Charlie as a "hockey rink" in one of their conversations, Charlie loses control of his car and slides off the road in one scene, and he slips on an ice patch and falls flat on his back in another. However, throughout the night, there are rather large drops of rain falling and puddles with unfrozen water on the roadways and parking lots. Being from upstate New York, I can tell you that freezing rain falls in much smaller droplets, and ice will accumulate wherever there is any water on the ground, not just in some places.
Factual error: Throughout the movie, the shots of the cars the characters are driving show front license plates. In the state of Kansas the only license plates used are always placed on the rear of the vehicle only. The only time the front of a car has a license plate is when it is a personalized plate, then being only optional. Also, Kansas license plates read "letter letter letter number number number" ex: "AAA 123", the movie shows them as "letter number letter letter number letter" ex: "A1A A1A".