Nope there are NO reports of any such thing.
These are right wing talking points.
Wrong bonehead...
Discovery of the body
Earlier that morning, two amateur fishermen had seen the overturned car in the water and notified the inhabitants of the cottage nearest to the pond, who called the authorities at around 8:20 am.[14] A diver was sent down and discovered Kopechne's body at around 8:45 am.[15] The diver, John Farrar, later testified at the inquest that Kopechne's body was pressed up in the car in the spot where an air bubble would have formed. He interpreted this to mean that Kopechne had survived for a while after the initial accident in the air bubble, and concluded that
“ Had I received a call within five to ten minutes of the accident occurring, and was able, as I was the following morning, to be at the victim's side within twenty-five minutes of receiving the call, in such event there is a strong possibility that she would have been alive on removal from the submerged car.[8] ”
Farrar believed that Kopechne "lived for at least two hours down there."[16]
http://en.wikipedia.org/wiki/Chappaquiddick_incident
Obviously, dish is still a pinhead...