Prosecutor Tom Little KC told the jurors they would want to consider the positions of the armed officers around the car and whether they were at risk at the time the fatal shot was fired.
The court was shown body-worn video from various officers and a graphic reconstruction of the “enforced stop with extraction”.
After the shooting, Mr Blake, 40, provided an account of the incident, saying he opened fire because he feared there was an “imminent threat”.
Recounting events, he said he had got out of his vehicle and moved towards the target, shouting: “Armed police, show me your hands.”
He said: “At this point the driver drove his vehicle at great speed toward myself and (unnamed officer) E156 to escape.
“I had a genuine belief that either of us could be killed and moved right, out of the way.
“The driver then rammed our car, which was behind me, as well as a parked car and stopped, wedged.
“Seeing the car was stopped I went round to the front and again challenged the driver, saying something like, ‘Armed police, stop the vehicle.'”