I'm guessing he didn't even notice. Just straight-up oblivious. The driver who right hooked my buddy and dragged him, as far as anyone could tell, was completely unaware of what had happened.

As terrible as that must have been, the driver could very well argue ignorance (they should still be in deep shit for it, though).

But in this case, the driver was being hailed by multiple witnesses who were trying to stop him from leaving the scene, and he fled faster!

He might claim negligence for the initial hit, but not for the rest of it.