If you are too dumb to realize that you can’t open the back seat doors in a black and white patrol car, then you are probably too dumb to live anyway.
Sad and tragic and a horrible way to go if he died from dehydration, but this guy was either really stupid or high as a kite. Either way, too stupid to live.
That would suggest that the back doors of police cars should be locked so they can’t be opened from the outside either without police action.