I wondered about this too.

I wondered why they didn't just disable the vehicle. They waited until it was driving away to fire. Were they worried about collateral damage from ricochet maybe? I know a vehicle is a big weapon, but they say they have training. No obvious sign of a gun, the one officer was right at the window. Shoot the tires, radiator, engine compartment. They were all around the vehicle. I don't get it.

How did they miss a child in the car?