Just for the sake of argument, let's pretend these guys aren't on motorcycles. Let's say, just for the sake of argument, that this is a GT40 owners club out for a group drive.
Some dickhead clod in an SUV smashes into the back of a GT40, seriously damaging it. Everybody stops to examine the situation, and to do whatever one normally does after a minor traffic accident, exchanging insurance info etc.
Now, said dickhead clod is faced with 40+ GT40 owners who witnessed him ramming the back of their friend's car. Instead of taking responsibility for his stupid driving, our SUV driving friend decides to punch the gas, destroy another GT40 completely, running over one of the GT40 drivers and paralyzing him in the process, and then speeds off.
Okay, the rest of you GT40 owners who witnessed this whole episode. What is your response now, since there's no cops in sight, and the local cops typically won't even respond to a traffic incident? Let him just drive off, or try to do something about it?
The bastard in the SUV should be strung up by his balls...and formally prosecuted for his numerous felonies, which is probably going to happen, media hype notwithstanding.