finding old cars (and bodies) in lakes

they just found two cars in an Oklahoma lake and both had bodies in them. they are suspecting one is from missing man from early 60's and other one three teens from 1970. 50 and 40 years ago!

sonar and other electronic scanners are so advanced now on boats. all the best bass boats have these structure scan units that look out well beyond the boat and pick up details on the bottom like bridges, boats, and cars. As these graphs have just become really advanced and popular last 5 years I have heard so many reports of fisherman finding cars under the water.

Bodies found in Oklahoma lake tied to decades-old mysteries? - CNN.com

 

not sure where they found the cars in lake.
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Below is image from the same Lowrance structure scan I use.
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so they just said cars were found together 50 feet from marina, so here is the close up. my suspicion both cars drove down boat ramp by accident drowning occupants. cars could have ended up in front of marina because the bottom will slope downwards out and to the middle of the cove.
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