The visual cues down there for someone familiar with the area would have alerted them they were not on the road home. The road home is on a dirt road through trees. Not a hill/bank without trees which is every way into the water from that side.
It isn't sounding like this is by the boat ramp but rather on the other side where the party was rumored to be. I understand the car could have drifted some. Still trying to get an accurate map as that one video shows car on one side and then found car on the other side. It's my understanding the car is on the party side which is not by the boat ramp. Correct me if someone has better info.