The attack on the vehicle afterwards is likely to be grounds for a self defense argument for anything that happened after the attack on the vehicle, as well as the charges related to leaving the scene of an accident.
It’s obvious from the damage that he was going at least 40 mph. The point he started his acceleration was almost two blocks from the crowd and the street behind him was empty. Not much of an argument that he was trying to escape the crowd.
The vehicle was also being pelted with objects thrown prior to driving into the crowd. It’s in several videos I’ve looked at.