Barnabas has not been seen, for at least (maybe more), two episodes.He's probably afraid and ashamed of "accidently" hitting Quentin "Grant" Collins.I for one, say that yes, it was an accident. Maybe Barnabas was thinking of what to have Willie make for dinner, maybe it was just those damned Leviathans running around or maybe, just maybe, "someone" had "messed" with the Bentley "bleeder valve".So, Barnabas..come on out and play....Please.
I think Barnabas knew exactly what he was doing when he tried to kill Grant/Quentin. But I think he was as shocked as ever when he saw who it was that he had just tried to run over. Since he never met the person whom Carolyn was suppose to meet he had no idea that this mysterious stranger could wind up being Quentin. The question is would he still have done what he did if he did knew it was Quentin?
It shows that while the Leviathan's are still controlling his actions, things are coming unraveled.