Gather up all those toy cars that are all over the house, and group them together on tabletops. A toy racetrack and small cars make an excellent centerpiece. Make and hang signs that say things like "Race Day - Start your Engines!"or Curves ahead. Make a start line at your front door, and a finish line at the food table. Make a sign for your yard or front door that reads "Welcome Race Fans!" Hang black and white checkered flags around the party room. Cut out pictures of popular drivers from racing magazines, mount them on construction paper, and hang them around the party room.
Serve food they would get at the race track, pizza, hotdogs, and chicken nuggets, anything you can buy at a concession stand. Use a round cookie cutter to cut out red, green and yellow Jell-O Jigglers, arrange them on plates to make stoplights. Frost graham crackers with white and black icing to make racing flags. Use wheel shaped pasta to make a pasta salad. To make a racecar birthday cake, ice a 9 x 13 inch cake with white icing. Using black gel frosting or chocolate sprinkles make a race track on the cake. Add toy race cars around the track.