instructions
One day in advance: Tint fondant as follows: 30 oz. light gray, 12 oz. royal blue, 10 oz. violet, 5 oz. green and 4 oz. black. Prepare race track board.
Wrap foamcore board with foil. Roll out 1/8 in. thick; attach with piping gel. Cover board in light gray up to top of track border; smooth. Use patterns to cut away gray from track border and grass areas. Use patterns to cut grass, track border, stands and sky; attach with damp brush. Cut assorted narrow green triangles for blades of grass and attach. Cut 1/8 in. wide strips for track details; trim to fit and attach. Using smallest Cut-Out, cut black and white squares and attach for finish line. Attach Jumbo Confetti for people in stands with dots of icing. Pipe tip 2 puffy outline message.
Bake and cool Cars cake. Ice cake sides, background areas, headlights, mouth, front windshield, side windows and blue lightning bolt smooth. Using tip 3, outline car details and number; pipe in eyes (smooth with finger dipped in cornstarch); add dot pupils and rivets on hood. Cover tires with tip 16 lines. Cover car, yellow lightning bolt and number with tip 16 stars. Add tip 3 outline muffler. Pipe tip 5 bead bottom border. Position cake on fondant-covered board.