Why do you care? This incident has absolutely nothing to do with the overall investigation, it is merely a distraction. I may have missed it somewhere, but I don't recall that anyone in the TBRC stated that they shot a fleeing vehicle, paid anyone for damages, or anything remotely like that. I do recall in the telling, that after one incident where shots had been fired, that a vehicle was soon seen beating a hasty retreat from the area.
Beyond that, if you are questioning the truthfulness of TBRC members, I seriously doubt they would admit to an unfortunate accident such as that (if those claims were made) unless it were the truth. While I have no facts to support my belief, growing up in a rural environment, I feel fairly confident stating that since automobiles were invented there have been a fair share of them accidentally shot by stray rounds or even purposefully. While it may shock and horrify many in today's litigious society where many are seeking to place blame or file lawsuits, accidents do happen despite all reasonable efforts to avoid them. Area X is not in a urbanized area where gunfire can automatically cause a police response, damages to property, or potential loss of life. The rules in rural areas are much different. In places like that, gunfire happens, a round goes stray and accidentally hits a somebodys truck a 1/2 mile away. Owner gets mad. Not much you can do if you didn't witness it and it wasn't deliberate. Police presence? On the other side of the county...if there is any at all. May not be ideal, but in many places in this big country of ours, that's the risk you run of being in a rural area. If you happen to be in the wrong place at the wrong time, well...that's the chance you take. Life sucks sometimes.
So I'm back to...why do you care? Methinks you are 1) Trying to discredit TBRC; 2) Trying to root out where Area X is so you can try to be a jerk by exposing it, thus contaminating the area; 3) Trying to root out where Area X is so you can go snoop around yourself; 3) an ambulance chasing lawyer; 4) Trying to stir up s***. So which is it? Otherwise, this incident you mention is really not important at all.