This is a theme puzzle with the subject stated below. Find the words listed in the diagram. They run in all directions forward, backward, up, down and diagonally.
Brakes Drag racing Driver Engine Grand Prix Indycar Le Mans Off-road Open-wheel
Pits Rallying Sports car Stock car Suspension Tires
Previous unlisted clue: DUNNO
Today's unlisted clue hint: THE CHECKERED —