I have been playing those fatal two seconds over and over - He was pulling his gun as soon as the car moved. The car definitely struck him, we can see him falling over on his bodycam, and in that near-black and white footage taken from in font of the vehicle, but he has already un-loaced his gun by the time he falls over.

This is going to take multi-video track analysis, with time-signatures matched to see, but I believe he was shooting in self-defence. I think it is going to be hard for the "she was acting in self defence by hitting the gas pedal, because of gun waved at her" argument.

The honking beforehand, proves her contextual intent, which was definitely anti-authoritarian, plus the lesbo 'big boy' and 'drive, baby, drive' comments we have heard, showed that her partner was actively encouraging her - similar to Jodi Hildebrandt - a big butchy lesbo, encouraging a willing, weaker flying monkey to do her subversive bidding.