Prepare cookie dough and press into cavities of pan. Bake and cool according to pan directions.
Outline and pipe in car body with tip 2 in red icing (smooth with finger dipped in cornstarch).
Outline and pipe in bumper with tip 2 in gray icing. Pipe outline grille with tip 2 in black icing. Pipe in black wheels with tip 2; overpipe hubcaps with tip 2 in gray icing. Pipe in window in white and headlights in yellow; sprinkle with matching color sugars.