Judging from my wild and crazy teenage days at about the same time as the kid in the Camaro, I’d say there’s a good chance they lied about where they were going not so they could go hunting, but to drive around and smoke a little weed. Fortunately back in my day, there weren’t any lakes around to drive into. That’s just what all of us did back then, drive around and smoke dope.
Not that so much as boaters leave the areas around ramps clear as a courtesy to other boaters. Also loading and unloading boats creates a considerable wake, and it wouldn’t be a pleasant location to park and fish because you’d be rolling about quite a bit. That location would be treated as ingress/egress only, with little if any loitering.
In the northern states, it’s not uncommon for ice fisherman to buy a derelict car, drive it out onto a frozen lake after the ice is thick enough, and use it as a shelter for the winter. They sometimes remove usable parts and sell them, and thus recoup the cost of the car. Then the ice melts and the car sinks into the lake.
A member of his family (brother?) saw Jimmy load the guns in the boot of the car before heading out that evening, which is why it’s always been suspected that they were going out hunting. I can no longer find the article that contains that information because this story has become big news in the last few days, but it predated finding the cars (with the guns still locked in the boot).
Judging from my days in West Texas at about that time, and I think rural Oklahoma would probably have been about the same, hunting and dope smoking were not mutually exclusive. I can see how some stoner kid with a hot new Camaro might have run it into the lake.
With all these other sitings now too, I wonder if this will be a byproduct of global warming, water levels dropping low enough to clear up a few mysteries.
This phenomenon of climate change turning up long-lost bodies started with Ötzi. Unfortunately, none of his family was left to receive closure. Unless, of course, we all are descended from him, in which case I feel much better now myself.