When Paula is chasing Andy in her car, she drives through the barrier at the bridge. The next shot is her POV, but from behind the barrier even though her car is in front of it.
The fact that Jennifer O'Neil's character is examining rare stones under a fine microscope within a moving motor home being driven at high speed on a highway seems implausible, if not impossible.
In the shot where the red Ford Mustang that Donald Sutherland's character is driving loses it's passenger side headlight when it broadsides the motor-home that he is pursuing - one can clearly see that the headlight has been loosened and rigged to fall out, prior to the collision.