Only time will tell. I have a feeling he'll be on his merry little way in life when all is said and done. Assume prosecution against the RR driver makes it to trial. If I was picked for the jury, the prosecution would have to find some pretty convincing evidence to trump the video that the bikers recorded.
Well, let's hope his lawyers are competent and not confident. If they go with public opinion and let anyone in, he will lose, criminally (if charged) and civilly (sic???).
I will repeat what I've been saying before because I've watched this thread turn into a drone with lemmings agreeing with each other. It is smarter to avoid a fight than to do things because you feel you are in the right or feel you have rights. Sometimes it just isn't worth the fight because it'll cause you in blood, time, and treasure. Why battle these bottom feeders when you don't have to?
Finally, someone is always watching, whether it's now or in the future. Whether it's a total stranger or your own child. How you handle a situation will come to influence others. Make the right choice and society will be better off. Make the wrong one and someone else may repeat that mistake.