You do realize cars have steering wheels. She wasn't driving a train where two steps off the tracks and you're in the clear.Thats not the point. If a perp has a gun, theres a justification that shooting protects the life of the officer. But if the perp just has a car, shooting the driver does nothing to make the officer safer. He is much better served to focus on getting out of the way. In that situation, shooting just serves to prevent the perp from getting away.