When Lou is setting up the car to go over the cliff, there is clearly no one in it. After the camera shot changes there is someone wearing red in the driver seat, and after the break Mark and Amanda talk as if there was someone in the car.
When Dr. Sloan walks in on Dr. Wilson in the surgical theater, not one person in the room has on a mask nor a cap. This would be unheard of during surgery. Also, Dr. Sloan has his stethoscope just dangling in front of him, which is obviously not a sterilized device, and there is no reason to put that on on the outside after gowning up.
After finding out that Dr. Wilson wasn't really a doctor, Dr. Sloan would not have allowed him to continue inserting a chest tube.