While I do not know if he has been charged yet, if he is tried for murder, I expect this picture to feature prominently in the defense. The car is not moving at speed, he looks like he's made a wrong turn and is faced with a not-so-friendly crowd blocking the street. He's about to hear a loud BANG from his car being struck, and the people closest to him, off the driver's corner, are masked and helmeted.
There will next be a presentation of the many violent acts perpetrated by the AntiFa types at Charlottesville . These are all over the place, despite the minimal play on the MSM.
Next there will be the argument "Members of the jury, my client saw himself being attacked, he had seen violent acts all day by people like those right outside his window, and he was familiar with the story of Reginald Denny. He not unreasonably panicked and pressed the accelerator to try and escape a crowd he saw as murderous, so he would not end up like this":
He will likely get reasonable doubt on a murder charge and a hung jury.