It sure looked like the guy was reaching for something to me.
A frame-by-frame check shows the driver was reaching for a stick shift or automatic shift on the center console.
He appears to pull forward, and the police officer fires, then falls, firing a second shot thru the door as he falls.
The last shot was fired 41 seconds into the video. The direct encounter starts at 30 seconds.
Game over in 11 seconds. The driver has been hit by at least one if not two shots at close range. He was dead even if he didn't know it yet. The rest is cleanup.
Don't know whether this was a "justified" shooting. It seems unwise that the officer reached into the car and attempted to pull the driver out.