Sweet! I wonder if the FBI intimidated the FHP so much the latter made mistakes under the pressure. So, their guy walks.
IIRC, that's exactly what happened.
The young men were accused of causing the accident, even though the FBI agent had been driving the wrong way on the freeway, like German geistfahren (ghost driver).
Eventually, the forensics experts looking at tire marks, etc, concluded that the young men did nothing wrong.
I don't think that's what happened. Initially, the FHP concluded that the dead brothers' vehicle had been going in the wrong direction on the interstate. Since the dead guys were black and the FBI guy was white, the black community was then up in arms, screaming racism and whatnot about the FHP's conclusion. Sometime after the accusations of racism, the FHP changed its findings. Ultimately, the jury wasn't sure whether it was the dead guys or the agent who had been driving in the wrong direction, so the jury had to acquit.