This is Frank attacks Radiator Springs goes in The Red Knight In Shining Metal.
[The next day, the townsfolk go about their business. Sheriff is asleep outside his billboard where the ground begins to tremble, waking him up]
Sheriff: What in the blue blazes?
[He drives foward and peeks out down the road. Frank then appears and speeds past Sheriff]
Frank: MOOOOOOOOOOOOOO!!!!
[Sheriff sees he's heading for Radiator Springs]
[Sheriff turns on his siren and gets ahead of Frank. The townsfolk feel the ground tremble]
Lizzie: Now just what could that be?