After Pam is released from the police, she is hitchhiking, once more, and when Howard picks her up, she is sitting on a tiny roadside stone wall, next to a metal barrier, to her left, facing downhill. As the red van drives off, with Pam inside, the van instantly drives uphill and the tiny roadside wall and the barrier are gone and replaced by rough verge.
When the two police officers', taking Mrs. Burke to help assist them, leave the police back-lot, car park, they proceed to leave with red light flashing and siren wailing, they then drive to the spot where Mrs. Burke's child has been dumped in the dumpster; the location of the dumpster is the exact location where they have just left, in the police back-lot, car park.
Film crew visible in red vans side and convex mirror when Howard opens the door moments before his first victim is killed.