Your video shows clearly the driver swap, the original driver walking away into the crowd, and the new driver getting into the vehicle.
This was a premeditated assault, nothing less.
Hoping that the names of the vehicle owner, and both drivers become known.
One of his greatest gifts is the way he can get people to underestimate him, followed closely by some world-class comedic timing.
He surely had anticipated some snarky comment from the press about the masks, and of course he had seen the gags circulating on twitter about church services re-branding themselves as mostly peaceful protests.
But it was the timing and delivery that made the remark one for the ages.
Link is above to slowed-down copy of video. The original driver of the car got out, and walked calmly away into the crowd without incident. The driver who drove into the crowd then entered the vehicle, closed the door, and almost immediately accelerated into people.
This was a planned, premeditated assualt.