The cop clearly saw the guy get in his car ( how could you not so close, or hear the door close ), clearly heard the engine start, and then proceeded to stop closer into the car before it moved. Then, after the car crept forward, he proceeds to place his foot closer to and under the path of the tire even more then before.
Fucker knew what he was doing all along ( both of them ).
Side note: If you piss off a cop and he has to force drag you out of your car like that because they are pissed the fuck off, you should already assume your gonna get your ass beat or get slung around like a rag doll. Might as well have started to throw some elbows and fists because you already know whats coming next. I cant help but think the guy face planted the street when the second cop kept ahold of his ankle up in the air like that.