Factual error: Towards the end when Delaney is showing Zack the footage of him and Miri, we see shots where the camera is pointing up at Zack from the ground. But they only had the one camera at a wide angle, and filmed the scene only one time, so they had no way of getting those shots.
Factual error: At the beginning of the movie, Miri pulls over, off of the highway, so that Zack can get the "hot hands" hand warmer out of his pants. Miri pulls over at Ralph's Army and Navy Supply Store parking lot. She pulls over to the right, and did not cross over any traffic, indicating that she pulled over on the same side of the road. Moments later, they pull in to the Monroeville Mall, also pulling in to the right. Geographically, if driving down Rt 22 East, one would come to the mall first. Ralph's is another 1.35 miles down the road.