Sgt. Corman pulls the station wagon over because one the headlights isn't working. After getting the car out of impound, Vincent, Lucather and Rossen pull up to the Sea Lab, and both headlights are now functioning.
In the police station, a detective answers an older style phone - one with flashing buttons for multiple lines - but none of the buttons are flashing or lit, either on ringing or answering.
When David and Selene are driving together n the front seat of the station wagon, David's shadow is clearly over his left shoulder and Selene's shadow is clearly over her right shoulder with both sitting in the front seat close together.
At 17 minutes, when the alien was shot in the garage a chalk outline of the body could be seen on the wall right after he burns up.