With all due respect to the good cops out there, and thanks for the dangerous job they do, this officer could have de-escalated the situation simply by telling the driver how fast he was going. That is a legitimate question. Should the driver have walked back towards his car? No. But they wouldn't have even been away from the car if the officer had told him how fast he was going.
For 16 years I was a Park Ranger. Now, cops may laugh at that, but having to talk to people who didn't want to hear from you is a very difficult job. We got some real whack jobs, and we had nothing more than pepper spray, and that was only for a few years. You learn to NOT escalate, how to talk to people, and when the situation is going south. I only had to call the sheriff four times, twice on the same guy, in 16 years. I only had to pull my spray once. I generally got compliance through good verbal skills. Am I great? Nope, just learned how to talk to people. I think many LE folks escalate a situation, either on purpose or not. That puts them in a more dangerous situation that could have been avoided.
My . 02 cents worth.