The license plate 2GAT123 reappears throughout the movie. Each victim of Andrea/Nikki displays the license plate on 3 different vehicles; a Jeep Cherokee, a Honda Accord and a Lexus.
In the beginning of the movie Andrea McBride wields an obviously fake prop knife with a retractable point.
Fawn makes a phone call from her car. Unfortunately, she is using a wireless home phone, not a cell phone.