Patokaa is a police officer.
Patokaa is a police car that chases Mater into a donut shop, where other cops are doing donuts. The cops love donuts as a food, and the donut is a drifting move in which to spin in a circle. He also appeared in Cars 2 as the police officer that arrests Petey Pacer because he rammed into him.
Patokaa is painted black and white, with a red siren and "Police" written on his doors.