Texas Hwy Patrol Officer Bulldogging a car

[40 Deluxe]

How convenient that the driver has his window down! And what will happen when the driver hits the brakes? Will the cop suddenly be back on his motorcycle? I can't imagine this being a real police tactic unless maybe to stop a runaway car with an unconscious driver, and even then too dangerous as a runaway car is likely on its way into the ditch or into oncoming traffic!
Or maybe the crooks had better manners back then and just drove straight and steady so the cop could safely climb aboard?