Source: Woodcraft Folk Games Games Games
Everyone stands in a circle. One player starts the game by saying "Zoom" and turning their head to the player on their left. That player then does the same, sending the "Zoom" around the circle. Once the car is zooming, players can reverse the car's direction by saying "Eek" (the sound of screeching tires when the car brakes).
See also Zip Zap Zop