Sanders added in the clarification post that his reason for passing the car was its slowing down to around 20 mph under the speed limit for that particular area.

Looks fairly obviously intentional on the video to me.

...I don’t know that not wearing gear and passing on a double yellow equate to assault with a vehicle...

You’d have to prove it was intentional.

100% correct!

He consciously used his vehicle as a weapon.

Looks to me like a case of asshole (swerving into them) on asshole (speeding recklessly, passing in a no passing zone, no safety clothing) crime.

The driver should be charged with attempted murder - but because he “only” hit a motorcycle, he won’t be.

I’m surprised that the asshole driver even stopped.